一刻魁堂Ikkoku Sakigake

Franchise

Allergen disclosure: Mandatory and recommended items

All 9 allergens Japan requires can be checked in the official document. Plus 18 recommended items, excluding Macadamia Nuts, Pistachio. (Eggs, Milk, Wheat, Buckwheat, Peanuts, Shrimp, Crab, Walnut, Cashew Nuts) As of June 2026.

This page is an entry point we compiled from officially published information. Always make your final check against the official source.

Covers 27 items (edition predating 2023)

Allergen

Select the allergens you need to avoid. We will tell you whether the published source document covers them.

Choose your allergens and we will prepare a Japanese sentence to show to the staff.

Open the official document

Some allergens cannot be checked here

This document covers only 27 of Japan's 29 listed items. The other 2 — including Macadamia Nuts, Pistachio — cannot be checked here.

If you avoid any of these, please check with the restaurant directly before visiting.

In addition, the published material cannot answer for Celery, Lupin, Mustard, Sulphur Dioxide and Sulphites — items that EU, International (Codex) require.

Learn more: how our allergen data works

How to check with this restaurant

Available as a PDF titled "Allergen Usage List," linked from the official site's menu page.

Show the original

公式サイトのメニューページに掲載されているPDF「アレルギー物質使用一覧」で確認できます。

This page carries food-allergen labeling information. Gluten-free claims and religious dietary exclusions are decided by different criteria.

Differences between stores

The material states that the menu offered differs between stores.

This document contains two tables: an all-store common menu list (about 63 items across ramen, tsukemen, rice dishes, sides, toppings, kids' items, desserts, seasonal items, and Muslim-friendly items) and a separate menu list specific to the Yokohama-Tsunashima location, which uses its own item numbering. The Yokohama-Tsunashima list includes items not in the common list (such as a chashu-pork rice bowl) while omitting some items that are in the common list (such as the eel rice bowl series and a low-carb noodle option). The common list also marks some items as available only at "suburban stores" or specific locations.(machine translation)

Show the original

この文書には、全店舗共通のメニュー一覧(ラーメン・つけ麺・ご飯もの・サイド・トッピング・お子様・デザート・季節限定・ムスリム対応の各区分、約63品)と、横浜綱島店専用のメニュー一覧(独自の商品番号がふられた別区分)の2種類が含まれています。横浜綱島店専用の一覧には、共通一覧にはないチャーシュー丼などの商品がある一方、うな丼シリーズや低糖質麺など共通一覧にある商品の一部は含まれていません。また、共通一覧の中にも「郊外店用」「店舗限定」と注記された商品があり、取扱い店舗が限定されています。

Please confirm at the store you are visiting.

How to check the material

The original material, and how to read it.

See how to read the symbols (2)

アレルギー物質使用一覧

Allergen usage list — This document is written in Japanese — Covers 27 items (edition predating 2023) (28 columns confirmed) — as of Jun 16, 2026

Document size

A 4-page PDF. Pages 1-2 are an all-store common menu list (about 63 items across ramen, tsukemen, rice dishes, side dishes, toppings, kids' items, desserts, seasonal items, and Muslim-friendly items), and pages 3-4 are a separate menu list specific to the Yokohama-Tsunashima location (about 35 items, same category structure but a different item numbering and partly different item set).

Show the original

PDF全4ページ。1〜2ページ目が全店舗共通のメニュー一覧(らーめん・つけ麺・ご飯もの・サイドメニュー・トッピング・お子様メニュー・デザート・季節限定メニュー・ムスリム対応メニューの区分で約63品目)、3〜4ページ目が横浜綱島店専用のメニュー一覧(同様の区分だが商品番号・品目構成が一部異なる、約35品目)という構成です。

How menus are ordered
Listed by category
How to use it

The document notes that information is updated from time to time as products change. Every page carries a "created on 2026/6/16" notation, which is the common creation date for the whole document.

Show the original

商品の変更に伴い情報は随時更新されるとの案内があります。各ページに「作成日 2026/6/16」の記載があり、この日付が全ページ共通の作成日です。

Notes for reading

The 28 covered allergens are the 8 items Japan's Food Sanitation Act requires to be labeled, plus 20 recommended items. This document's 20-item recommended list, however, names "matsutake mushroom" rather than "macadamia nuts" (a different edition from the current recommended list). Separately from what the table's marks show, two notes apply to the whole document: (1) trace amounts of other allergens — including ones not marked in a given item's row — may get mixed in during factory production or in-store cooking/plating; the specific shared equipment or process is not named. (2) The frying oil used contains pork and soybean, so fried items may carry trace pork/soy from the oil even where those columns are not marked. Drink items are not included in this list at all. The document is in two parts: pages 1-2 are the all-store common version and pages 3-4 are a version specific to the Yokohama-Tsunashima location; both parts use the same 28-item column set and order, but the items listed differ somewhat between the two.

Show the original

対象の28品目は、食品衛生法で表示が義務づけられている8品目と、表示が推奨されている20品目です。ただしこの文書の推奨20品目には「まつたけ」が含まれ、「マカダミアナッツ」は含まれていません(現行の推奨品目リストとは異なる版の構成です)。表の印の有無とは別に、次の2点が文書全体にかかる注記として書かれています: (1) 工場での製造時や店舗での調理・盛り付けの際に、表に印のない品目も含め他のアレルギー物質がごく微量混入する場合があること。共有される具体的な設備・工程は特定されていません。(2) 使用している揚げ油に豚肉と大豆が含まれていること。揚げ物メニューでは、豚肉・大豆の印がない場合でも揚げ油由来でこれらが付着している可能性があります。また、この一覧にドリンクメニューは含まれていません。文書の前半(1〜2ページ)が全店舗共通版、後半(3〜4ページ)が横浜綱島店専用版という2部構成になっており、両者で対象28品目・列の並びは同じですが、掲載されている商品自体は一部異なります。

Legibility notes

The PDF's text is selectable/copyable, and both the table and the notes are machine-readable as normal characters. Some column-header item names (e.g. "walnut," "gelatin") are set vertically, but this did not hinder extraction. There are no image-only sections.

Show the original

PDFのテキストは選択・コピーが可能で、表・注記とも通常の文字として機械的に読み取れます。列見出しの品目名(「くるみ」「ゼラチン」等)は縦書きで表示されていますが、抽出上の支障はありません。画像化された箇所はありません。

Document edition

No single version number is given; every page carries only a "created on 2026/6/16, Product Department" notation as its version marker.

Show the original

単一の版番号は記載されておらず、全ページ共通で「作成日 2026/6/16 商品部」という作成日のみが版の識別として付与されています。

Menu names in your language are machine-translated.

Confirmed to be the current document on Aug 24, 2026

How to read the symbols

The original document uses the symbols below. Our table shows the original symbol next to items with possible cross-contact.

How to read the symbolsアレルギー物質使用一覧
How it appearsMeaning
This ingredient is used in the item.
Show the originalその原材料が使用されていることを示します。
0
The document does not define this symbol (the digit "0"). The table has a dedicated column for every one of its 28 covered items, and this "0" appears uniformly wherever ● (used) does not, so this site reads it as "not used as an ingredient" -- our own judgment based on the table's structure, not a guarantee against unintended trace cross-contact.
Show the original文書はこの記号(半角数字「0」)の意味を明記していません。表は28品目すべてに専用の列を持ち、●(使用)以外の箇所には一律にこの「0」が使われているため、当サイトの判断として「原材料として使用していない」ものとして読み取っていますが、これは表の構造から当サイトが行った判断であり、意図しない微量混入がないことを保証するものではありません。

This document does not state, per symbol, the scope of possible cross-contact (a shared fryer, a shared line, and so on).

Details

Allergy notes

The official site's menu page links to a PDF titled "Allergen Usage List." It covers 28 allergens in total: the 8 mandatory items plus 20 recommended items (this document's recommended list names "matsutake mushroom" rather than "macadamia nuts"), marked for use across a wide range of items — ramen, tsukemen (dipping noodles), rice dishes, side dishes, toppings, kids' items, desserts, seasonal items, and even a ramen aimed at Muslim customers. Separately from what the table's marks show, the document notes that trace amounts of other allergens may get mixed in during factory production or in-store cooking/plating, and that the frying oil used contains pork and soybean. Some items are only sold at certain locations. Because ingredients change from time to time, customers are advised to check the latest information before ordering.

Show the original

公式サイトのメニューページからPDF「アレルギー物質使用一覧」を確認できます。義務表示の8品目と、表示が推奨されている20品目(この文書では「マカダミアナッツ」ではなく「まつたけ」が含まれる版で表記されています)、合わせて28品目について、ラーメン・つけ麺・ご飯もの・サイドメニュー・トッピング・お子様メニュー・デザート・季節限定メニューのほか、ムスリム(イスラム教)の方向けラーメンも含め、幅広い商品ごとに使用の有無が一覧になっています。表の印の有無とは別に、工場での製造や店舗での調理・盛り付けの際に他のアレルギー物質がごく微量混入する場合があること、揚げ油に豚肉と大豆が含まれていることが注記されています。商品によっては一部店舗でのみ取扱いがあります。原材料は随時変更されるため、購入前の最新情報の確認が案内されています。

Menu names in your language are machine-translated.

Found an error in the allergen information?

Please tell us if anything here differs from the official information. Safety-related reports take priority, and we hide the affected entry until we have checked it. If you are about to eat, please check with the venue rather than waiting for us.

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