Japan Oyster Huts: Every Shack Has Its Own Rules

On one Itoshima fishing pier, a hut's own website lists beer among the things you may bring in. A few doors along, another lists alcohol as an example of what not to bring. One charges a table fee of ¥220 per person, another ¥550 for the whole table — a difference that nearly doubles for a group of four. One takes same-day phone bookings; another refuses to answer even a question about free seats. There is no such thing as "the rules for Japanese oyster huts." What decides your bill, what you can carry in and whether you can reserve is the page belonging to the specific shack you are walking into. So this guide skips the rulebook and gives you a five-field checklist for reading that page — plus one trick for spotting that the opening dates on the official site are last season's.

Those opening dates on the official site are last year's

Do this first, because getting it wrong wrecks a day: match the weekday in brackets against the year. The Itoshima tourism association keeps a page listing all 29 oyster huts with each one's season-opening date, and the page prints no year anywhere. As of 6 September 2026 those dates read: 4 October (Sat), 11 October (Sat), 18 October (Sat), 20 October (Mon), 25 October (Sat), 29 October (Wed), 1 November (Sat).

Line them up against a calendar and the verdict is unambiguous: all seven match 2025, and not one matches 2026. In 2026, 4 October is a Sunday, 20 October a Tuesday and 29 October a Thursday. What that page is showing right now is the 2025-26 season.

Two independent checks back this up. On the association's own announcement list, other items have been updated as recently as 5 September 2026 — traffic restrictions for a fireworks festival, road-safety notices — while the oyster-hut post sits untouched at 2 October 2025. The shops have not moved either: Sumiyoshimaru in Kafuri has a news feed whose latest season-opening notice is dated 15 October 2025.

When will it change? Sumiyoshimaru's four previous opening announcements landed on 14 September 2022, 12 September 2023, 10 October 2024 and 15 October 2025. On that rhythm, expect the 2026-27 dates somewhere between mid-September and mid-October. Until then you are looking at last season, and the only clue on the page itself is the weekday in brackets.

One trap while you are doing this: two entries on that page — Noburin's 1 October (Sat) and Horyomaru's 3 November (Sat) — do not fall on a Saturday in either 2025 or 2026. Those are typos in the page itself. When a date fails both years, skip it rather than letting it overturn the reading of the rest.

Five fields to check on the shop's own page

Spend your effort reading the page for your hut, not memorising general rules, because the general rules do not exist. These five fields are the spine of this guide, and a section follows for each. Working through them takes about five minutes per shop.

How is this meal actually priced?

Three pricing units, and they do not convert into one another. Check this field first, because it decides whether comparing two huts is even meaningful.

Model one: by the plate or by the piece. This is what the whole Itoshima strip runs on. Sumiyoshimaru prices grilled oysters at "¥1,800 and up per plate" and raw or rock oysters at market price per piece. Note that "and up" — it is a floor price. The same page carries a caveat: oyster size varies with the season, so the number of oysters on a plate varies too. Order a plate in November and another in March and you may pay the same for a different count.

That thread also settles a question people keep asking: how much a kilo of Itoshima oysters costs has no answer. Not one Itoshima shop page publishes a per-kilogram rate. Shimada Suisan in Hiroshima does list a "grilled oysters 1kg" item — but the amount is not on that page. The units are not interchangeable and neither side can be used to estimate the other.

Model two: timed all-you-can-eat. Shimada Suisan near Miyajima-guchi runs 70 minutes on weekdays and 60 on weekends and holidays, with a small bowl of oyster rice included, and notes the all-you-can-eat runs only from late October to Golden Week. The price is not published on that page — this guide therefore does not quote one, and does not adopt the figure circulating in search snippets that cannot be found on the official site.

Model three, up in Tohoku: you do not grill anything. Matsushima Kaki-goya MATSU sells 45-minute oyster all-you-can-eat at ¥3,500, and its pitch is explicit: the staff do the cooking, no time is lost waiting for steaming, so the whole slot goes on eating. Nearby, Yakigaki House at Matsushima Sakana Ichiba also runs 45-minute sittings and lists two tiers, ¥3,500 and ¥4,000 — but that page does not say what separates them, so this guide will not guess at weekday-versus-weekend or adult-versus-child.

Travelling with grandparents or small children who will not enjoy tending a fire? Put the Matsushima model in the itinerary rather than assuming an oyster hut means grilling your own. Want the opposite — a pier, your own charcoal, and a side of clams? Itoshima is the one. Sumiyoshimaru's menu runs well beyond oysters: oyster kamameshi, clams, abalone, mentaiko ahijo, plus mineral water, cola and ice. The idea that an oyster hut sells nothing but oysters and fire does not survive contact with that menu.

Is the table fee per person or per table?

The amounts are similar; the unit is what differs, and it moves a group bill by nearly double. This field never makes it into the headline of a travel write-up, and it always makes it onto your bill.

Run the numbers for four people: ¥880 at Sumiyoshimaru, ¥500 at Kaki-no-Masuda, ¥550 at Fujimaru. For a couple the gap narrows to ¥440 against ¥500 and stops mattering. The larger the group, the more this field is worth reading.

Sumiyoshimaru's line carries an easily missed rider: waived for junior-high students and above on presentation of a student ID. Travelling with teenagers or university students? Pocket the student cards — it is the easiest discount on the whole trip.

One situation adds a second line here: book Sumiyoshimaru's seats through a booking platform and the platform's reservation fee sits alongside the shop's own service charge as two separate charges. The detail is in the section on booking.

Note also that these three do not even burn the same fuel. Sumiyoshimaru and Kaki-no-Masuda bill for gas; Fujimaru bills for charcoal. Same region, same category of business, different heat source — so "an oyster hut always means charcoal" is not a general rule either.

What can you bring in?

Six shops, six policies, and the cleanest contradiction is alcohol. Put two sentences side by side and the point makes itself: Kaki-no-Masuda in Itoshima lists drinks including alcohol among the things you may bring in; Shimada Suisan in Hiroshima lists alcohol as an example of what not to bring. Same word, same category of business, opposite rules.

Fujimaru's row deserves its own paragraph, because it is the wording most likely to be misread: "you may bring it in" and "you may cook it" are two different permissions. That shop explicitly allows outside food and drink and, in the same passage, forbids putting any of it on the grill. Kaki-no-Masuda goes the other way and actively suggests bringing foil to make foil-baked dishes. Two shops, opposite answers to the same action.

There is a seventh answer, and it is not on any shop's own page: Hiryumaru in Fukuyoshi states in the notes on its booking listing that meat may not be brought in at weekends or on public holidays. So one shop can give you different answers on different days — the table above records what the shops publish themselves, and this one only surfaces on the reservation page.

One level up there is something worth knowing: the association page listing all 29 huts contains no mention of bring-your-own anywhere in its text. No regional body has published or even relayed a rule on this. That is not a gap in the research — the layer simply does not exist, which is why this guide does not hand you a table of "Japanese oyster hut rules".

Can you book on the day?

Three shops, three answers, and they point in opposite directions.

Shimada Suisan in Hiroshima leaves no wiggle room: it does not accept same-day reservations, will not take one by phone on the day, and seats customers strictly in order of arrival. It goes one step further and states that at busy times availability shifts too quickly to report accurately, so it may decline to answer a query about free seats at all. Groups of twelve or more are the stated exception and may call.

Matsushima Kaki-goya MATSU answers the opposite way in its FAQ: walk-ins without a reservation can be seated, but weekends are frequently full and booking ahead — by phone or online — is recommended. Sumiyoshimaru in Itoshima announced at the start of its season that reservations were already open.

Then there is a fourth pattern that appears only at the end of the season. Nisshinmaru in Itoshima is listed in the association's closing table as running until 29 March, and reservation-only from that point on. Late in the season, the assumption that you can simply walk into an Itoshima hut stops being safe.

MATSU also settles a question that trips up groups: within one party, some people ordering all-you-can-eat while others order à la carte is fine. If your travelling companions have wildly different appetites, that sentence saves an argument.

If a phone call in Japanese is the blocker, Sumiyoshimaru's seats are bookable online

🔴 First, be clear what that is: a seat reservation, not a meal. The oysters, the drinks and the consumption tax are all paid at the hut. The listing's exclusions name meal charges, alcoholic and non-alcoholic drinks, service charge and consumption tax in so many words — what you pay online buys a place at a table, not lunch.

🟢 It also settles the question the table-fee section asks. Booking through the platform means two separate charges: a seat reservation fee of ¥440 per person (about NT$90) to the platform, and the shop's own service charge of ¥220 per person. ⚠️ Those two figures appear in different boxes on the same page — ¥220 in the purchase notes, ¥440 in the cancellation policy — and the page never explains how they relate. I am not picking one on your behalf; ask before you book.

⚠️ Three more: same-day cancellation costs ¥3,000 per person whether or not you call; the hut closes Tuesdays and Wednesdays; and the listing text is machine-translated, with the place names mangled, so search the Japanese originals — Kafuri, the Chikuhi Line, Chikuzen-Maebaru — if you want to check anything.

KKday: Sumiyoshimaru, seat reservation only (oysters paid at the hut)

What month does this hut close?

The Itoshima association's page is headed "October to around April", and the association's own table contradicts that heading. Its closing-date table of 19 March 2026 spreads out like this:

From 22 March to July is a spread of nearly three and a half months. Plan a May trip around the heading's "until April" and you will arrive at a closed pier; write off Itoshima after April and you will miss the handful still trading.

The table's footer adds a caveat that matters more than any individual date: weather and the condition of the oysters can change both the trading schedule and the hours, so ask each shop directly. Two more association lines are worth carrying: trading can end early once the live oysters sell out, and business may be suspended mid-session in bad weather.

Widen the lens and the winter-only assumption falls apart entirely. Matsushima Kaki-goya MATSU lists its closing day as none, open year round, trading 10:00 to 15:00. Yakigaki House at Matsushima Sakana Ichiba says its all-you-can-eat runs all year, with November to March merely the peak of flavour — and in the same breath notes that oyster growing conditions can shift the timing, so call before you go. Shimada Suisan in Hiroshima is the counter-example: its all-you-can-eat runs only from late October to Golden Week.

A final wrinkle: Kaki-no-Masuda's own page describes the season as October to the end of March, a month shorter than the association's heading. Within one region, two official or semi-official statements already disagree. This field ends at a phone call to the shop.

What do you need to pack?

Almost nothing, which runs against what most people expect. Six of the seven shops checked state free loans on their own pages.

• Kaki-no-Masuda: seasonings, jackets, gloves, oyster knives, small plates, disposable chopsticks and wet wipes all kept in store
• Fujimaru: jackets, gloves and oyster knives lent free; shucking lessons offered if you need them
• Kaki House Shoei: jackets and aprons lent free
• Kaki House Mokkun: jackets lent
• Hirochan Kaki: gloves and a knife handed over to prevent burns, so you can come empty-handed
• Matsushima Kaki-goya MATSU: a paper apron, gloves and a knife per person

The one shop asking you to bring something is Shimada Suisan, which says to bring gloves — and then says one pair is lent free. So even that one is not really asking you to shop for anything.

⚠️ That sentence needs a qualifier, though: the above is what these seven shops publish, not a rule that holds everywhere, and loans do get withdrawn. Hiryumaru, also in Itoshima, states in the rental box on its booking listing that free jacket loans have been discontinued since the pandemic. So bring the outer layer anyway rather than assuming a jacket will be waiting.

Which leaves two genuine items: an outer layer you will not mourn (the reason is the next section), and a designated driver. The Itoshima tourism association states in the same breath that drink-driving is strictly prohibited and that anyone drinking should take public transport.

Do oysters explode?

Yes — and what you are dressing against is flying shell and scalding water, not smoke. This may be the most practically useful section here, because both shops put it on their own websites while it rarely surfaces in English-language coverage.

Shimada Suisan's house rules run to only four lines, and one of them is: because the grilling is done over charcoal, oyster shells scatter, so mind what you wear. The stated reason is shell fragments, not odour on your clothes.

Sumiyoshimaru goes into more detail with a whole section on grilling:

• Occasionally an oyster will burst suddenly as the seawater inside turns to steam, raising the pressure and spraying hot water
• Leave one on the fire indefinitely and the shell itself can split, so do not keep grilling the same oyster for a long time
• The direction you lay it is worth attention — the shop says the spray direction cannot be pinned down in general, but appears to tend to come from the side opposite the hinge, so laying the oyster lengthwise may reduce the damage
• There are exceptions to how they burst, so stay alert and take care not to catch your neighbours

Keep the hedging on that third point: the shop wrote "appears to tend to" and "may", not a technique, and this guide will not promote it into one. It is worth trying and it is not a guarantee.

Which makes the dress code simple: something dark, hard-wearing and expendable over your clothes; take the loaner jacket and put it on over the top; do not wear the outfit you have dinner reservations in. Glasses-wearers get one incidental advantage here — you are already wearing eye protection.

Is "for cooking" a lower grade?

No. Freshness is identical and the difference is the harvesting sea area — that sentence is Hiroshima Prefecture's, not ours. The prefectural page sets out three classes of water:

The part worth carrying is that the label switches dynamically. During the raw-eating shipping season, producer and shipper associations follow prefectural guidance and run norovirus self-inspections once or twice weekly across eight defined sub-areas of Hiroshima Bay. A positive result switches that batch to cook-before-eating, and it stays there until a subsequent inspection confirms a negative. So "for cooking" is not a fixed grade — it may simply be this week's batch from a sea area that tested positive.

Raw-eating oysters carry one further legal duty: the harvesting sea area must be labelled. The prefecture also explains why oysters get their own sea-area regime at all — unlike other bivalves, there is a custom of eating not just the muscle but the internal organs raw.

Now the layer that most needs stating plainly: the statutory compositional standards govern bacterial counts, not viruses. The Tokyo Metropolitan Government page lists the standards for raw-eating oysters — bacterial count no more than 50,000 per gram, coliform most probable number no more than 230 per 100g, and for shucked raw-eating oysters, Vibrio parahaemolyticus MPN no more than 100 per gram, stored at or below 10°C. Every one of those is a bacterium.

And the clearest statement of what that means comes from an oyster hut itself. Sumiyoshimaru's FAQ, answering how to avoid getting sick, says that eating them cooked is not a problem while raw requires care; that the shop clears the Food Sanitation Act's standards for raw-eating oysters; but that what the Act specifies is bacterial counts, so a virus like norovirus is an exception, and anyone feeling unwell should skip the raw ones.

So what can you actually act on? Question 15 of the health ministry's norovirus Q&A gives the number: 85 to 90°C at the core for at least 90 seconds. The official wording is "desirable" rather than mandatory, and the same page cites Codex guidance with identical figures.

Read it with the ministry's other sentence, or this section turns into scaremongering: norovirus poisoning from bivalves occurs with raw or undercooked shellfish, and there is no problem eating them when thoroughly heated. That is the government's own positive conclusion.

At the grill it reduces to one line: a shell popping open does not mean the centre is done. Pull it the instant it opens and the core is often still short; let it bubble on for a while after opening, until the liquor is rolling and the edges of the meat have firmed. This is also the most concrete food-safety difference between the self-grill model and the staff-steamed Matsushima model — in a self-grill hut, the cooking is your responsibility.

One regulatory footnote to save you from stale information: Tokyo's guideline on handling oysters and its raw-eating oyster notification requirement were both abolished on 31 May 2021, and Hiroshima's prefectural permit system for oyster processing premises ended the same day. Both changed because of the Food Sanitation Act amendment and the introduction of HACCP-based hygiene management; what applies now is the business licence under the Food Sanitation Act.

Getting to Itoshima without a car

It is doable by public transport, but the bus frequency is the real variable. The Itoshima tourism association spells the access out: the three Fukuyoshi huts are about a 12-minute walk from Fukuyoshi Station on the JR Chikuhi Line; Fukae is about 17 minutes on foot from Chikuzen-Fukae Station; Kafuri, Funakoshi and Kishi are reached by bus from the north exit of Chikuzen-Maebaru Station.

So the phrase "a whole row of oyster huts in Itoshima" is more precisely the row at Kishi fishing port — Kishi's 11 plus Funakoshi's 7 account for three-quarters of every grill-on-site hut in the area. If you have not picked a specific shop, aim at one of those two piers and you can change your mind on foot.

The association attaches three warnings, and each one is the reason this section exists: bus services are infrequent, so check in advance; roads near the piers get congested every year; and drivers must not drink, with anyone planning to drink asked to use public transport.

Stack those three and you have the actual problem for car-free travellers: infrequent buses, congested roads, and no legal way to drive back to Fukuoka after a beer. Two quite different routes handle it, and they do not overlap:

Route one: hire the vehicle and fold the oysters into a half day

A half-day tour out of central Fukuoka takes the whole transport problem away, at the cost of paying mostly for the vehicle rather than the oysters — it solves the association's three warnings, not the oysters themselves, which are a walk-in affair. Worth it only if you also want Futamigaura or Shiraito Falls on the same run, and poor value if oysters are the entire reason. ⚠️ It is billed as a nature tour with the oyster hut as one stop, and it carries two reviews, far too small a sample to read as reputation.

GetYourGuide: Itoshima half-day tour from Fukuoka, with the oyster hut stop

Route two: pick a hut the train reaches and book the table

In the table above, Fukuyoshi is the one port you reach on foot from a JR station — about 12 minutes from Fukuyoshi on the Chikuhi Line, with no bus to wait for. Hiryumaru in Fukuyoshi puts that in its own listing title, describing itself as a place you can only reach by train, and giving the walk as 10 minutes from the station.

🟢 It is not the same kind of product as the Sumiyoshimaru booking above, and the difference is the whole point: Hiryumaru's weekend and holiday plan lists "material cost, table use fee" among its inclusions — the oysters and the table fee are both in the price, rather than a seat alone. NT$408 as checked.

⚠️ Four things before you book: no reviews at all; confirmation takes up to a day rather than being instant, with free cancellation to one day out; no meat may be brought in at weekends or on holidays (that is the seventh answer in the bring-your-own section); and the page quotes two different durations for the same visit — two hours at the top, ninety minutes in the notes — which I am not going to resolve on its behalf.

KKday: Hiryumaru at Fukuyoshi, weekend and holiday plan (materials and table fee included)

For the city end of the trip, our Fukuoka travel guide covers getting around and eating in town.

What this guide could not verify

The most important line first: not one date in this guide belongs to the 2026-27 season. Every trading date quoted comes from last season's official documents, and it is here for exactly one purpose — to show you how to tell which season the page in front of you is displaying. Here is the rest of what could not be obtained, and how this guide handled it:

Three sentences to take away

One: there is no rule layer, so the thing to research is the individual hut. Bring-your-own, the billing unit for the table fee, same-day booking and the closing month all produce opposite answers within a single fishing port — and the official page that lists all 29 huts together has never published a bring-your-own rule at all. Five minutes on your hut's own page beats any general guide, including this one.

Two: you barely need to pack anything, but you do need the right jacket. Jackets, gloves and oyster knives are lent free almost everywhere, and one hut says to come empty-handed. What you actually need is an outer layer you do not care about — because oysters burst and spray hot water and shells scatter, not because of smoke.

Three: oyster huts are not a winter-only thing, and the dates on the official site are probably last year's. A Matsushima hut trades year round, two Itoshima huts trade year round and one runs to July. To work out which season a page is showing, match the weekday in brackets to the year. Itoshima's 2026-27 opening dates should surface between mid-September and mid-October on the pattern of the last four years. For the rest of the cold-season eating list, see our Japan winter food guide; for everything else before you fly, the Japan travel essentials guide covers it.

Frequently Asked Questions

Q1：Can I bring my own drinks into a Japanese oyster hut?

It depends entirely on the hut, and two neighbours on the same fishing pier will tell you opposite things. Kaki-no-Masuda in Itoshima lists drinks including alcohol, rice dishes, vegetables and sausages as things you may bring in, and adds that seasonings, jackets, gloves, oyster knives, small plates, chopsticks and wet wipes are all provided by the shop. Shimada Suisan near Miyajima-guchi in Hiroshima lists alcohol as an explicit example of what not to bring, allowing only soft drinks and seasonings. Even within Itoshima the answers diverge: Kaki House Shoei permits drinks and seasonings only; Fujimaru allows food and drink in but forbids putting anything you brought on the grill; Kaki House Mokkun and Noburin simply write "OK to bring things" with no qualifier at all. The Itoshima tourism association page that lists all 29 huts together contains no mention of the word for bring-your-own anywhere in its text — no regional authority has ever published a rule on this, which is precisely why it lives only on each shop's own page. Open the page for the hut you are actually going to and look for that line.

Q2：What is the table charge, and how much should I budget for it?

The amounts are all in the low hundreds of yen, but the billing unit differs, and that is what changes your bill. Sumiyoshimaru in Kafuri, Itoshima charges a table-and-gas fee of ¥220（テーブル代／ガス代（一人）） per person, with the same line noting it is waived for junior-high students and above who show a student ID. Kaki-no-Masuda in Fukuyoshi charges a gas usage fee of ¥300（1 名利用時） for one person or ¥500（2 名以上／1 テーブル） for two or more per table. Fujimaru in Kishi charges ¥550（炭代／1 テーブル） for charcoal, also per table. Four people therefore pay ¥880 at Sumiyoshimaru and ¥500 at Kaki-no-Masuda for the same line item. Shimada Suisan in Hiroshima states only that grilled-oyster orders carry a separate charcoal charge per table, without publishing the amount. Do not average these into a mental "about two or three hundred yen" — check whether your hut bills per head or per table first.

Q3：Are Japanese oyster huts only open in winter?

No, and the Itoshima tourism association's own two documents contradict each other on this. Its page is headed "October to around April", but the closing-date table the same association published on 19 March 2026 shows Sumiyoshimaru and Hirochan Kaki in Kafuri both marked as trading year round, Horyomaru in Funakoshi trading until July, and three more running to around 10 May — while at the other end roughly ten huts wrap up in March, the earliest on 22 March. That is a spread of nearly three and a half months. Further north the picture is clearer still: Matsushima Kaki-goya MATSU states its closing day as "none — open year round", and Yakigaki House at Matsushima Sakana Ichiba says its all-you-can-eat runs all year, with November to March simply being when the oysters taste best. So the idea that an oyster hut is a winter-only thing does not hold across Japan. The question to ask is what month your hut closes this season.

Q4：Are "for cooking" oysters lower quality than "raw-eating" ones?

No. Hiroshima Prefecture states outright that freshness is identical and the difference is which sea area they came from. The prefectural page splits harvesting waters into three classes: designated areas, from which oysters may ship directly as raw-eating; conditionally designated areas, where roughly twenty hours of purification in changed water is required first; and non-designated areas, which may only ship oysters labelled for cooking. What makes this genuinely worth knowing is that the label switches dynamically. During the raw-eating shipping season, producer and shipper associations run norovirus self-inspections once or twice a week across eight defined sub-areas of Hiroshima Bay; when a sample tests positive, that batch switches to cooking-only and stays there until a later test comes back negative. The pack in front of you marked for cooking may simply be this week's batch from a sea area that tested positive. Raw-eating oysters carry one extra legal duty: the harvesting sea area must be labelled.

Q5：How long do I actually need to grill an oyster to be safe?

Japan's health ministry publishes a number you can apply yourself: 85 to 90°C at the core for at least 90 seconds. It appears in question 15 of the ministry's norovirus Q&A, and the wording is "desirable" rather than a legal duty; the same page cites Codex guidance with identical figures. Read it alongside the sentence the ministry places nearby: norovirus food poisoning from bivalves occurs with raw or undercooked shellfish, and there is no problem eating them when they are thoroughly heated. That is the government's own positive conclusion, so this is not a warning to skip the oysters. On the grill there is exactly one rule that matters: a shell popping open does not mean the centre is done. Pull it the second it opens and the core is often still short of temperature — let it bubble a while longer once open. One legal footnote worth knowing, and an oyster hut wrote it themselves: Sumiyoshimaru's FAQ notes that what the Food Sanitation Act specifies is bacterial counts, so a virus like norovirus is an exception, and anyone feeling unwell should skip the raw oysters.

Q6：Do oysters really explode on the grill? Will my clothes get ruined?

Yes, and what you need to guard against is flying shell and scalding water, not smoke or grease. Shimada Suisan puts it plainly in its house rules: because the grilling is done over charcoal, oyster shells scatter, so mind what you wear. Sumiyoshimaru devotes a whole section to grilling technique: occasionally an oyster on the grill will suddenly burst, because seawater inside turns to steam, pressure builds and hot water sprays out; leave one on the fire indefinitely and the shell itself can split; and the direction you lay it matters, because while the spray direction cannot be pinned down in general, it appears to tend to come out from the side opposite the hinge, so laying the oyster lengthwise may reduce the damage. Keep that hedging — the shop wrote "appears to tend to" and "may", not a rule, and this guide will not upgrade it into one. The practical version: wear something dark and expendable over your clothes, take the loaner jacket the shop offers, and do not wear the outfit you booked dinner in.

Q7：Do I need to book, or can I just walk in on the day?

Three shops, three answers, pointing in opposite directions — so this is a field you must check. Shimada Suisan in Hiroshima is emphatic: it does not accept same-day reservations, will not take one by phone on the day either, and seats walk-in customers strictly in order of arrival. It goes further, saying that at busy times availability changes too fast to answer accurately, so it may decline to answer even a query about free seats; groups of twelve or more are the exception and can call to discuss. Matsushima Kaki-goya MATSU says the opposite in its FAQ: walk-ins without a reservation can be seated, but weekends fill up and booking ahead by phone or web is recommended. Sumiyoshimaru in Itoshima announced at the start of its season that it was already taking reservations. And there is a fourth pattern that appears only at the tail of the season: Nisshinmaru in Itoshima is listed in the association's closing table as trading until 29 March and reservation-only after that.

Q8：How much does a kilo of oysters cost at an Itoshima hut?

Itoshima has no per-kilo price, because that is not how it sells them. Every Itoshima shop page checked prices by the plate or by the piece, and not one publishes a per-kilogram rate. Sumiyoshimaru lists grilled oysters at "¥1,800 and up per plate" and raw or rock oysters at market price per piece — and the same page carries a caveat that oyster size varies by season, so the number of oysters on a plate varies too. The plate price is a floor, and the count inside it moves. Shimada Suisan in Hiroshima does have a "grilled oysters 1kg" item on its menu, but no amount is published on that page. The two units are not interchangeable, and a Hiroshima per-kilo figure cannot be used to back-calculate what an Itoshima plate is worth. To budget, work from the plate floor price plus the table fee plus whatever rice and drinks you will add — that gets you closer than hunting for a per-kilo number that does not exist.

Q9：What equipment should I bring to an oyster hut?

Almost nothing. Most shops lend you the jacket and the knife. Six of the seven shops checked state free loans on their own pages. Kaki-no-Masuda says seasonings, jackets, gloves, oyster knives, small plates, chopsticks and wet wipes are all kept in store. Fujimaru lends jackets, gloves and oyster knives free, and offers to teach you how to shuck if you do not know. Kaki House Shoei lends jackets and aprons. Kaki House Mokkun lends jackets. Hirochan Kaki says gloves and a knife are handed to you to prevent burns, so you can come empty-handed. Matsushima Kaki-goya MATSU provides a paper apron, gloves and a knife per person. The only shop asking you to bring anything is Shimada Suisan, which says to bring gloves — and then adds in the very next line that one pair is lent free. So the real packing list is two items: an outer layer you do not care about, and a designated driver, because the Itoshima tourism association states drink-driving is strictly prohibited and asks anyone drinking to use public transport.

Q10：The opening dates on the official page — can I trust them?

Check the weekday in brackets against the year first, because they are often last season's. As of 6 September 2026, the Itoshima tourism association page lists each hut's opening date, and nowhere on that page is a year printed. Match the dates to weekdays and the answer is clean: 4, 11, 18 and 25 October marked Saturday, 20 October marked Monday, 29 October marked Wednesday and 1 November marked Saturday all line up with 2025, and not one of them lines up with 2026. On the same site, other announcements have been updated as recently as 5 September 2026 while the oyster-hut post sits at 2 October 2025. The shops have not moved either: Sumiyoshimaru's most recent season-opening notice is dated 15 October 2025. Its previous four announcements landed on 14 September 2022, 12 September 2023, 10 October 2024 and 15 October 2025 — so on that rhythm, 2026-27 dates should appear somewhere between mid-September and mid-October.

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