I'm a newcomer to mustard. I discovered why I love Uno's Pizza Classic Beyond Burger so much. They put Ketchup on the top bun and Mustard on the bottom. I've no

I'm a newcomer to mustard. I discovered why I love Uno's Pizza Classic Beyond Burger so much. They put Ketchup on the top bun and Mustard on the bottom. I've now adopted that for at home when I eat Chick Burgers and it really pops. I've eaten french fries with it but I just never got the memo about how it is both a condiment and a spice before now in my fiftys.