I'll tell you what it is, and it is indisputable. Ketchup is the #1 worst condiment. All it does it take away the taste of what you are eating. Learn to love mustard. Spices rule.
***My rule about ketchup should be totally ignored unless eating good meatloaf, or making a brown suger and apple cider based BBQ sauce. Come to think of it, my rule sucks.
Maybe you are eating hunt's. Does this happen when you eat Hienz? I'd never eat the one John Kerry does, but her family's product is the best.