At Fish With You, the sauerkraut fish centers on tender white fish fillets poached in a deep bowl of chili-laced broth with fermented mustard greens, tofu, and vegetables over noodles or rice. What distinguishes this version is its focus on the signature sour-spicy balance from the pickled greens, a hallmark of the Beijing chain that specializes in this single style of fish soup. As you eat, the heat builds gradually while the tang from the vegetables keeps the broth lively, and the generous portion is designed for sharing. Multiple writeups note that this shop is dedicated almost entirely to variations of this dish, making it the clear focal point of the menu.