Which fish is traditionally used in the Fish and Chips dish?

The traditional fish used in the classic Fish and Chips dish is cod. This choice is rooted in the dish's origins in the United Kingdom, where cod became widely available and popular due to its mild flavor, flaky texture, and ability to fry well. These characteristics make it ideal for being battered and deep-fried, resulting in a crispy exterior and tender interior that are hallmarks of Fish and Chips.

Other fish options, while they can be used in some variations of the dish, do not hold the same traditional significance. For instance, halibut is known for its firm texture and can be found in Fish and Chips, but it is generally more expensive and not as commonly used as cod in traditional recipes. Rockfish and sole are also viable options for fish dishes, but they do not align with the classic Fish and Chips preparation where cod is the fish of choice.