One of my favorite Iranian soups! This is a hearty and filling vegetarian soup that is enjoyed by many Iranians. You can use dried beans and cook them yourself; however, I use canned beans to save time. Personally, I don't think this dish is complete without the traditional ingredients of reshteh and kashk. Reshteh is an Iranian noodle that is similar to fettuccine, and can be found at most middle eastern markets. Kashk is whey, which can be purchased at middle eastern markets too. This can be substituted with sour cream; however, you are totally missing the full flavor of this dish if you do so. From My Persian Kitchen.