Ceviche is a refreshing and tangy seafood dish that is popular in Mexico and other Latin American countries. It is made by marinating raw fish or seafood in citrus juice, such as lime or lemon juice, which effectively 'cooks' the fish without heat. The marinated seafood is then mixed with onions, tomatoes, cilantro, and other seasonings to create a flavorful and zesty dish. Ceviche is typically served chilled and can be enjoyed as an appetizer or a light main course. It is a perfect dish for hot summer days.