You used to be able to get a mustard Whopper, which had all the stuff of a burger, but mustard and no mayo. I ordered a mustard Whopper recently, and the order-taker looked confused.
“You want a mustard Whopper?”
“Yes, I said.”
They delivered a piece of meat in a bun with mustard and nothing else. It was pretty awful, but I ate it and blamed myself.
LOL...... You’ll have to change to whopper, mustard no mayo.
Good luck........