Peanut is a versatile flavor. Sweet, savory, whatever.
You could use it with ketchup if you like. The mix could be a pretty nice combo to use as a sauce for a Thai dish, honestly. Just on bread would probably be pretty overwhelming alone. Balance it against something.
But would you eat a peanut butter sandwich with catsup?
Peanut is a versatile flavor. Sweet, savory, whatever.
You could use it with ketchup if you like. The mix could be a pretty nice combo to use as a sauce for a Thai dish, honestly. Just on bread would probably be pretty overwhelming alone. Balance it against something.
Not all condiments go with all fillings. For example, ketchup with tuna would be pretty rare, but mayo would be almost a requirement.
Dunno about that, but a heaping tablespoon full in a pot of chili is bomb.