Japanese food is often seen as healthy and vegetable-based, but Japan is also widely regarded as one of the more challenging countries for vegans and people following a plant-based diet.
The main reasons are Japan’s unique food labeling practices and its deep-rooted dashi (Japanese fish soup stock) culture.
In this article, we’ll take a fact-based look at what travelers should know about Japanese food labels, introduce seven dishes that may look vegan but often aren’t, and share a list of safe vegan-friendly foods you can reliably find at convenience stores.
The biggest challenge for vegans in Japan is dashi, the traditional soup stock that forms the foundation of Japanese cuisine.
Even when a dish contains no meat, dairy, or eggs, it may still include bonito (skipjack tuna) dashi or other seafood-based stocks. These ingredients are widely used to add umami and are often hidden in soups, sauces, seasonings, and simmered dishes.
Some ingredients on Japanese food labels require extra caution, especially 調味料（アミノ酸等） ”seasonings (amino acids, etc.)” and たん白加水分解物 “hydrolyzed protein.”
These ingredients can be derived from either plant or animal sources, but Japanese food labeling laws do not require manufacturers to specify their origin. As a result, it’s often impossible to determine whether a product is truly vegan-friendly based on the ingredient list alone.
In particular, 調味料（アミノ酸等）“seasonings (amino acids, etc.)” are found in a wide variety of processed foods in Japan. If you follow a strict vegan diet, it’s generally safest to avoid products containing this ingredient.
Note: Some vegan travelers choose not to worry about trace ingredients or processing aids. This guide, however, is written for readers who want to avoid animal-derived ingredients as strictly as possible.
Japanese food labeling rules allow certain composite ingredients—such as tsukudani (simmered seaweed) or mayonnaise—to be listed without disclosing all of their individual ingredients, provided they meet specific labeling requirements.
As a result, a product may simply list “tsukudani” as an ingredient, even though it was made with bonito extract, meat extract, or other animal-derived ingredients during production.
For vegans, this means that the ingredient list alone may not always provide enough information to determine whether a product is truly vegan-friendly. This is especially important to keep in mind when choosing fillings for onigiri (rice balls) and other prepared foods.
Below are some of the most common Japanese dishes that may look vegan-friendly but often aren’t. If you’re traveling in Japan as a vegan, keep this list in mind to help you avoid unexpected animal-derived ingredients.
At first glance, kombu (kelp seaweed) and pickled plum (umeboshi) may seem completely vegan. However, many convenience store onigiri contain seasonings or flavor enhancers that may be derived from animal sources.
If you buy plain cooked rice and umeboshi separately, you may be able to find vegan-friendly options. Just be sure to check the ingredient list carefully, as some pickled plums are seasoned with honey.
The noodles themselves are usually vegan. However, the soup is the problem.
Most ready-to-eat udon and soba sold at convenience stores are made with bonito (skipjack tuna) dashi, making them unsuitable for a strict vegan diet.
Outside Japan, inari sushi is often offered as a vegan option. In Japan, however, it’s usually not vegan.
The reason is bonito (skipjack tuna) dashi. The fried tofu pouch (aburaage) used for inari sushi is typically simmered in a seasoned broth made with dashi, making it unsuitable for a strict vegan diet.
Even salads, one of the most common vegan choices, require extra caution when buying them from Japanese convenience stores.
The biggest concern is the dressing. Even dressings that appear plant-based—such as sesame or shiso (perilla) dressing—often contain bonito (skipjack tuna) dashi or 調味料（アミノ酸等）“seasonings (amino acids, etc.)”, which may be derived from animal sources.
Tsukemono (Japanese pickles) are a popular vegetable side dish with a wide variety of flavors. However, they aren’t always vegan-friendly.
Many varieties contain 調味料（アミノ酸等）“seasonings (amino acids, etc.)”, which may be derived from either plant or animal sources. Because Japanese food labels don’t specify the origin of these ingredients, it’s often impossible to confirm whether the product is suitable for a strict vegan diet.
Although miso soup is often served as a vegan-friendly dish outside Japan, that’s rarely the case in Japan.
Most miso soup is made with bonito (skipjack tuna) dashi. However, you can easily make a vegan version by using plant-based dashi, such as kombu (kelp) or shiitake mushroom broth, along with vegan-friendly miso.
Natto is one of Japan’s most famous health foods, and the natto itself is vegan.
The problem is the sauce packet that comes with it. In most cases, the included sauce contains bonito (skipjack tuna) dashi, making it unsuitable for a strict vegan diet.
A simple solution is to skip the sauce and season your natto with soy sauce instead.
If you’d like to try a classic Japanese snack, frozen edamame is one of the safest vegan-friendly choices.
Most varieties are simply seasoned with salt, making them both delicious and easy to enjoy. They’re widely available at Japanese convenience stores and are a great source of plant-based protein.
If you’d like to enjoy vegan-friendly udon in Japan, frozen udon noodles are a great option. They can be heated in the microwave in just a few minutes, making them quick and convenient.
Simply add your own vegan-friendly seasonings to create a safe and delicious meal. For example, soy sauce and sesame oil make a simple Japanese-style sauce. You can also add vegetables such as green onions for extra flavor.
One final tip: some soy sauces contain bonito (skipjack tuna) dashi, so it’s always worth checking the ingredient list before you buy.
Sekihan is a traditional Japanese rice dish made with glutinous rice and red beans (azuki). It has long been enjoyed on special occasions and celebrations, making it a uniquely Japanese food to try.
Compared with many other onigiri fillings, sekihan is generally a safer choice for vegans. However, some manufacturers may still use bonito (skipjack tuna) dashi or 調味料（アミノ酸等）“seasonings (amino acids, etc.)”, so it’s always a good idea to check the ingredient list before purchasing.
Yakiimo (roasted sweet potato) is another must-try Japanese favorite. Sweet potatoes are slowly roasted until they become soft, sweet, and melt-in-your-mouth delicious.
They’re commonly sold at Japanese convenience stores during autumn and winter. If you’re visiting during the colder months, don’t miss the chance to enjoy one while it’s hot and freshly roasted.
As you’ve seen, many Japanese dishes that appear to be plant-based may still contain animal-derived ingredients through seasonings or dashi.
How strictly you choose to follow a vegan diet is a personal decision, but we hope this guide helps you make more informed choices while traveling in Japan.
In our next article, we’ll introduce vegan-friendly street food and sweets you can enjoy in Asakusa, Tokyo. Be sure to check it out!
