>>But I do agree, a hamburger is indeed a ketchup delivery system.
Sacrilege. Mustard on meat.
FRENCH FRIES are a ketchup deliery system. It’s why Chick-fil-a waffle fries are so awesome. All the waffling creates lots of ketchup-holding goodness.
But mustard on the burger. If you want something else, cheese and bacon.
Whataburger comes with the mustard, it is obligatory.
The spicy ketchup? that is for the awesome fries, but hey.. if the two should meet...