Salmon with Tomato, Dill, and Garlic Soup

When riêu is brought to the table, expect a full-bodied soup laced with rich-tasting seafood and tangy tomato. Viet cooks prepare a fish riêu like this one as an everyday canh, or the more extravagant crab and shrimp riêu noodle soup (page 215) for a special occasion. Carp is the fish typically used in this soup, but since it is not commonly available at regular markets, my family switched to salmon, which has the fattiness to pair perfectly with the tomato, dill, and garlic of a classic riêu. We used salmon steaks for years because the bones and skin enriched the broth. But steaks can be difficult to handle during cooking and later on in the bowl, so I now use salmon fillet. In the classic northern Vietnamese tradition, the fish is seared first to firm its flesh. The searing not only helps the fish hold its shape, but also provides a nice textural contrast in the finished soup.