There are three main types of ingredients in miso soup: Dashi - soup stock made from katsuobushi fish flakes and kombu kelp Vegetables like daikon radish, potatoes, turnip, leek or leafy greens (also...
"Traditional" Miso Soup that you would probably order in a restaurant is NOT actually vegan, because one of the ingredients is "dashi", which is made from fish.
However, Miso Soup can easily be made...