Is Miso Vegan?

Japanese cuisine is naturally well-suited to vegan diets, with its focus on vegetables and plant-based proteins. But what about miso: is miso vegan? In most cases, yes— traditionally produced Japanese miso paste is typically plant-based. Still, there are a few exceptions, and spotting them starts with understanding what miso is.

Traditional miso is made by fermenting soybeans with salt and a grain (like rice or barley), using a starter culture called koji. The result is a thick, savory paste with a rich, earthy flavor—nutty, salty, and packed with plant-based umami.

Although miso paste may be vegan-friendly, not all products made with miso are plant-based. Some products, such as instant miso soup mixes, can contain a fish-based broth called dashi. Similarly, restaurants may use commercial miso products that contain fish extracts or bonito powder. To be certain, be sure to check the ingredient list or ask the kitchen. 

Thanks to the rich umami developed during fermentation, miso is a valuable ingredient in vegan cooking because it can add layers of savory depth, making plant-based dishes sing. Stir it into a hearty vegetable miso soup, whisk it into dressings, or use it in a flavorful glaze for tofu—vegan miso delivers bold, meaty flavors with no animal products.

Need inspiration? Explore our collection of vegan miso recipes to experience just how versatile miso can be in your vegan recipes.