The two dates that matter most are 消費期限 (shōhi kigen, use-by) and 賞味期限 (shōmi kigen, best-before): one is about safety under stated conditions, while the other is about quality.
Japanese supermarket packaging can look dense even when the food itself is familiar. The reason is not that every label is designed for tourists to decode. Japan’s food-labeling system is meant to provide information about safety and reasonable consumer choice, and the information is generally presented in Japanese.
Start with the date, not the discount sticker
| Japanese term | English meaning | How to treat it |
|---|---|---|
| 消費期限 | Use-by date | Do not eat after this date when the food has been stored as instructed |
| 賞味期限 | Best-before date | The period when the product is expected to retain its intended quality under the stated conditions |
| 製造日 | Production date | The date it was made; not a substitute for checking the applicable expiry label |
The Consumer Affairs Agency distinguishes use-by and best-before dates in its English materials. A best-before date is not the same statement as “unsafe immediately afterward,” but it is also not permission to ignore storage instructions or the condition of the food. For ready-to-eat meals, sandwiches, sushi, and other chilled items, check the use-by date first and plan to eat them promptly.
The other labels worth recognizing
| Japanese | Reading | What it tells you |
|---|---|---|
| 原材料名 | genzairyō-mei | Ingredients |
| アレルギー | arerugī | Allergy information or allergen notice |
| 内容量 | naiyōryō | Net quantity |
| 保存方法 | hozon-hōhō | Storage method |
| 要冷蔵 | yō-reizō | Keep refrigerated |
| 栄養成分表示 | eiyō seibun hyōji | Nutrition information |
| 原料原産地名 | genryō gensanchi-mei | Origin information for ingredients where applicable |
The exact presentation changes by food category and package size. The Consumer Affairs Agency’s food-labeling guide lists ingredients, the country of origin of the largest ingredient in processed food, allergen information, a use-by or best-before date, storage conditions, and nutrition facts among the information consumers may see.
What 要冷蔵 means in practice
If a package says 要冷蔵, keep it cold. A refrigerated supermarket shelf is not a suggestion about taste; it is part of the product’s stated storage condition. Do not buy a chilled item at the beginning of a long sightseeing day and leave it in a warm backpack until dinner.
For visitors staying in a hotel, the simplest plan is to buy chilled food close to when you will eat it. If your room has no refrigerator, choose shelf-stable items instead. Our guide to summer foods in Japan covers other practical ways to eat comfortably in hot weather.
How to read a discount sticker
Supermarkets may add a sticker such as 値引 (markdown) or 半額 (half price) as the use-by date approaches. The sticker is a price change, not a new safety date. Read the original date and any additional sticker together.
The discount timing is store-specific. Some branches mark prepared foods at different times, and not every product receives a markdown. Treat the sticker as a reason to re-check the date, storage instruction, and quantity—not as a reason to buy more than you can eat.
Allergies and translation tools
Food labels in Japan are generally written in Japanese. The Consumer Affairs Agency provides an English food-allergy communication sheet and English explanations of the labeling system. Save the official sheet before shopping if an allergy makes an ingredient decision important.
Camera translation can help with a long ingredient list, but it should not be your only protection against a serious allergy. Confirm the specific ingredient with staff or use the official communication material, and remember that a translated label can still be misread.
When a product has a familiar name, do not skip the small print. A “milk tea,” snack, sauce, or dessert can contain allergens or ingredients that are not obvious from the front of the package.
Why the labels feel more detailed than expected
The label is doing several jobs at once: telling you what the product is, how it was made, how to store it, when its quality or safe-use period ends, and what it contains. That is why the front of a package may look simple while the back or side is crowded with small Japanese text.
Once you recognize the date, storage, ingredient, and allergen headings, you do not need to translate every character. Read the few fields that affect your decision, then enjoy the food while it is at its best.
FAQ: Japanese supermarket food labels
What is the difference between 消費期限 and 賞味期限?
消費期限 is the use-by date for foods that should not be consumed after the stated date under the specified storage conditions. 賞味期限 is the best-before date for expected quality. Neither label removes the need to follow storage instructions.
What does 要冷蔵 mean?
It means the product must be refrigerated. Keep it cold after purchase and avoid carrying it around for hours in hot weather.
Does a half-price sticker mean the food is expired?
No. It usually means the store has marked down the item as its use-by date approaches. Check the original date and eat the product according to the label.
Are Japanese food labels available in English?
The official system is generally presented in Japanese on products sold in Japan, although some products include additional languages or symbols. The Consumer Affairs Agency provides English reference materials that can help visitors understand the main fields.
Sources
- Consumer Affairs Agency, Food Labelling
- Consumer Affairs Agency, Japan’s Food Labelling System (English)
- Consumer Affairs Agency, A Safe, Healthy and Comfortable Life: Booklet