Double Filet-O-Fish

What is it?

Two breaded fish fillets sit in a steamed bun with tartare sauce and a slice of cheese, so you get the same basic build as the regular fish sandwich, just with another fillet in the middle. Steaming rather than toasting keeps the bun soft and a bit springy, which suits the delicate fish better than a crisp roll would. Compared with the standard single-fillet version, this one simply doubles the fish. Both fillets are breaded and fried, then stacked with sauce and cheese for a layered bite. In the UK, it tends to appear as a limited-time item that sometimes returns for longer runs, and the extra fillet makes a noticeable difference to the overall heft.