During the summer months nothing is better or more cooling than Ceviche. Ceviche is raw fish that is cooked with lime or lemon but is essentially still raw (there is no raw fish taste), and mixed with chilies, onions, olives tomatoes and other ingredients. There is no one single recipe for ceviche. Serve it in a cocktail glass with crackers or chips, or more authenticly on a Tostada shell with some hot sauce.