日本：过敏原

“法律”是指具有约束力的规则。“官方指南”并非法律，但检查人员会参考它。“Chef Hygiene 默认值”是指在没有规则给出具体数值的情况下，应用程序会检查的值。

• 法律For packaged food, 9 allergens are mandatory: egg, milk, wheat, shrimp, crab, buckwheat, peanut, walnut and, since 1 April 2026, cashew nut (food made by 31 March 2028 may keep its old labels). The Consumer Affairs Agency also lists recommended ones. Restaurants have no labelling duty; telling customers what is in each dish is voluntary, and our advice.