This is a popular Thai soup that is known for being both spicy and sour. The broth is typically made of stock and fresh ingredients including lemon grass, lime leaves, galangal, lime juice, fish sauce and chili peppers. This delicious soup can be served with prawns (Tom Yum Goong), chicken (Tom Yum Gai), fish (Tom Yum Pla) or mixed seafood (Tom Yum Talay). Served with mushrooms, onions and a sprinkling of fresh cilantro.