As a teenager, I worked in the family sandwich shop. We had one fellow that would come in and order two hot dogs with just mayo and ketchup. HEHEHE.... I thought it was odd, until I tried one. It wasn’t bad! But after all these years, I never asked for my hot dogs with catsup on it. Its all the way or no way for me.
Best hot dogs I ever had were off a push cart, with Cole slaw and ketchup.
I make ketchup and mayo wiener sandwiches - yum.
Sandwich is a type of bread. Hot dogs are made with hot dog buns so aren’t sandwiches. And they’re made with mustard. Doesn’t matter if one doesn’t like mustard, that’s just the way it is.
Tacos and burritos aren’t sandwiches. Hoagies aren’t sandwiches. Stuffed pita bread isn’t a sandwich. An egg McMuffin isn’t a sandwich. A bagel with lox isn’t a sandwich. A burger is a burger, not a sandwich. Veggie wraps aren’t sandwiches.