Saltfish is a type of preserved fish that has been salted and dried to extend its shelf life. This method of preservation has been used for centuries, allowing fish to be stored and transported without refrigeration. Common types of fish used for saltfish include cod, herring, and mackerel. In many cultures, saltfish is a staple ingredient in traditional dishes. It is often rehydrated by soaking in water before cooking, which helps to remove excess salt. Popular recipes featuring saltfish include saltfish and ackee in Jamaican cuisine and bacalhau in Portuguese dishes.