So I was looking into fast-food fish sandwiches. And neither Wendy's cod fillet nor Burger King's Alaskan fish sandwich have cheese. It's basically just the fish, lettuce, and tartar sauce. Which makes sense, because who puts cheese with fried fish fillets? I mean, you don't associate fish and chips with cheese. Yet McDonald's puts slices of cheese in place of lettuce. Their sandwich of course came first, long before the other ones, but the "fish with cheese" combination is such a weird one that I wondered if folks knew where that came from.