Vegan Japanese-style traditional miso soup is one of the easiest and quickest bowlfuls you can make. A good reason to prepare it at home is to make it vegan — without the bonito fish flakes used in miso soup served by many Japanese eateries.
You heard that right — the miso soup served in Japanese restaurants is often made with bonito, aka fish flakes. Not always, but more often than not, so if you’re tempted when you go out, be sure to ask.
So, to settle the question, is miso soup vegan? Sure, if you make it yourself using only vegan ingredients. If you order it in a Japanese eatery, more likely than not it won’t be vegan due to bonito.
Like many other Asian-style soups, this one is best eaten soon after it’s made. There’s no benefit to long simmering. Leftovers can be stored in an airtight container and refrigerated, but do try to finish it up the next day!
More about miso
Miso is a nutritious, high-protein fermented paste made from soybeans and salt (or a combination of soybeans, grains, and salt).
Available in natural food stores and Asian groceries (as is the sea vegetable kombu, another traditional ingredient in this soup. Learn more in this site’s Guide to Kombu and Kelp), pungent-tasting miso is most commonly used to make simple broth preparations like this simple, traditional soup. It can also be used to make bold-flavored sauces and dressings.
Shiro, or mellow white miso
Miso comes in several varieties; these are the most common: Soybean (hatcho) miso is the most intense; barley (mugi) miso falls somewhere in the middle between hatcho and shiro in terms of intensity. Shiro miso is a variety of mild, yellowish miso sometimes labeled “mellow white miso.”
Which variety of miso to choose is entirely up to you and your palate. Because they’re aged and fermented, miso and tempeh are considered the two most digestible forms in which to enjoy soy foods.
Note that once the miso is stirred into water, it should not be boiled. Otherwise, its beneficial enzymes will be destroyed. See more about miso in our Guide to Miso.
How long does miso soup last in the refrigerator?
Simple Asian-style soups generally taste best right after making them. In a well-sealed container, this miso soup will still taste great the next day, and will last for 2 to 3 days in the refrigerator. This doesn’t make a big batch, so there really is no need to consider freezing it.
- 32-ounce container low-sodium vegetable broth
- 2 cups water
- 2 strips kombu (sea vegetable), each about 3 by 5 inches
- 6 to 8 fresh or dried shiitake mushrooms
- 3 to 4 tablespoons miso, to taste
- 12.3-ounce container extra-firm silken tofu, diced small
- 2 scallions, green parts only, very thinly sliced
Optional variations (see Notes)
- Cooked noodles (about 4 ounces)
- Daikon radish (about 1 cup grated or matchstick-cut)
- Grated fresh or squeeze-bottle ginger (1 to 2 teaspoons, to taste)
- Combine the broth, kombu, and mushrooms in a small soup pot. Bring to a slow boil. Remove from the heat and let stand, covered, for about 30 minutes.
- Remove the kombu from the broth and do one of three things: Chop and return to the broth; save for another use; or discard. Remove the mushrooms with a slotted spoon. Trim them of their tough stems and save the caps for another use, or slice them and return to the broth.
- Just before serving, return the soup to medium-low heat. Dissolve the desired amount of miso in just enough warm water to make it pourable. If you’re not familiar with miso, start with less and add as desired. Stir into the broth.
- Add the tofu, scallions, and any of the optional variations. Remove the soup from the heat once piping hot (don’t let it boil) and serve at once.
Miso soup with noodles: Cook about 4 ounces of Asian noodles (like soba or ramen) separately, according to package directions, until al dente. Drain and add to the finished soup.
Miso soup with daikon or turnip: Add about 1 cup of grated or matchstick-cut daikon radish or turnip while reheating the soup before serving.
Ginger: While not a traditional ingredient of basic miso soup, ginger adds a gentle touch of heat to the broth.
If you like this miso soup, you might also enjoy …
See more delicious vegan soups & stews.