Arroz con costra is a traditional rice dish, a cross between a paella and a casserole originating from the Alicante area. What differentiates arroz con costra from other Spanish rice dishes is its glossy top crust of beaten eggs, hence the name, as costra means crust.

Although there are some variations, the dish is usually prepared with a combination of rice, eggs, spareribs, pork, chicken (or sometimes rabbit), butifarra sausage, olive oil, tomatoes, stock, salt, and paprika or pimentón. The dish is often made in a large cazuela – the ingredients are first fried, then simmered in the stock, and the cazuela is then transferred to the oven with the beaten eggs poured over the rice.

Arroz con costra is then baked until the eggs form a crust on the surface. This is one of the oldest Spanish rice dishes – there’s a recipe that dates back to 1220.