Bonito del Norte en Aceite de Oliva is a canned seafood product produced by Casa Santoña using Bonito del Norte caught in the waters of the Bay of Biscay. The fish is typically harvested during the seasonal fishing campaign and selected for its quality and freshness.

After cooking, the tuna is carefully cleaned and cut before being preserved in olive oil with a small amount of salt, a method that helps maintain its natural flavor and tender texture. The resulting product is known for its light-colored flesh, delicate yet firm structure and clean marine taste characteristic of albacore tuna.

The olive oil enhances the flavor of the fish while preserving its moisture and softness. In Spanish cuisine, this type of tuna preserve is commonly used in salads, tapas, sandwiches and cold appetizers, where its mild and balanced flavor can be appreciated with simple ingredients.