Tortilla española, also known as Spanish omelette, is a traditional dish from Spain made primarily with eggs, potatoes, and onions. The ingredients are cooked together in a skillet, resulting in a thick, hearty omelette. It is often served as a tapa, a small dish meant for sharing, and can be enjoyed hot or cold. This dish is popular throughout Spain and has many regional variations. Some people add ingredients like peppers or chorizo, while others prefer a simpler version. Tortilla española is a staple in Spanish cuisine, celebrated for its flavor and versatility.