You will find some kind of Thai curries in almost every Thai food recipe. Green curry paste is the hottest, seasoned with basil, green chilis, and kaffir lime leaves. Thai red curry paste is a bit milder, made with red chilis. Yellow is the mildest, made with cinnamon, turmeric, and cayenne pepper. There are others like Massaman curry paste, which is mild and sweet, and Penang curry paste, which is rich, sweet, and dry.