Why does mayonnaise act and taste the same as butter if you fry it on a grilled cheese sandwhich?

Question

My grandad taught me this trick when I was like 7 and old enough to make a grilled cheese, and it was like magic to me, and is still really, I just thought about it and I really don’t know any food chemistry so naturally brought me to reddit to seek out my tasty answer.

In: Chemistry

Answer 1

Mainly because of the fat content, mayo is mainly oil.

But also don’t use too much mayo or the flavor is ruined. But it is damn good when done right! Damn OP now I want a grilled cheese!