I can see it.
My husband uses mayo instead of butter to make grilled cheese. And grilled peanut butter.
Correct. Lightly mayo both sides of the bread. Used no butter. Used AGED Red Leicestershire Cheese. Must aged at least nine months. Never use cheddar cheese. Mayo on the outer suurfaces of the bread toasts up beautifully. Mayo is mostly egg and oil. The aged red Leicestershire cheese
Is more piquant and tasteful.