Ham and pineapple on Pizza is famously offensive to Italians and oddly not mentioned in the article (probably because it is such a cliche). Yet it works. And those saying fruit has no place on a pizza: tomato is a fruit. Some of this grammar is simply irrational habit.

Sometimes food rules are even encoded in religion. E.g. Halal and Kosher food rules are pretty strict about what you can and cannot eat and how things should be prepared. Or the Catholic habit of eating fish on a Friday or indeed serving wine during church.

Going against the rules can yield nice results. Fusion cooking is a thing. Also, Neil Stephenson wrote about a North American thing called recombinant cooking. I'm not sure if he invented that term but it refers to the practice of cooking food with store bought processed food (e.g. rice crispies) and recombining it with other ingredients. Basically, it's the notion that some people only know heavily processed food and use them as ingredients.