Sauerkraut in your sushi may sound crazy, but it turns out to be a hit. Fermenting sauerkraut gives it exactly the same delicious umami flavour you find in non-vegan sushi. This may be sushi without fish, but it does have that nice umami flavour. This vegan sushi recipe was created by Spanish macrobiotic chefs, and they can do it! If you are not afraid and are adventurous in the kitchen, give it a try.