Done right? For me that’s a hearty amount of good quality mayo – we use Duke’s brand. After mixing in one can of tuna I add a few heaped teaspoons of capers, a blast of dill pickle and salt/pepper for seasoning. My wife prefers butter on the exterior, I prefer olive oil for the extra flavor and less messy finish.
I actually love to cook my sandwich in the air fryer believe it or not. If you’re feeling especially daring, throw a slice of American cheese in there too.