i have so many spare sachets of ketchup from mcdonalds, and recently i've been experimenting with them to make a good sauce to mix into plain noodles. ketchup, sweet soy sauce, paprika, chili oil, chili flakes, toss in some random spices, and that's a good noodle sauce.
before finding that combination, i've gotten quite a few that were way less palatable.
my alternate answer is spaghetti, just to piss off the italians.
Was at a cookout last weekend where I met a bunch of Italians. I just moved to CT where seafood pizza is apparently a thing so I had to ask them. Boooooy, did that ever get them started. And then I said I also like pineapple on my pizza.