Weighting in on the offal eating subject: my country grills intestines, kidneys, sweetbread, cooks stew with pig trotters and tripe, eats cow tongue and brain, etc. This is all normal stuff you get from the butcher, not an exotic or novel thing that you need to know someone in order to get.
The reason why boomers in America and culturally adjacent places don't like organs and thus didn't feed them to their kids or make it a normal part of their diet is because their parents only knew to boil the hell out of chitlins, for example, and called that dinner. Hence the horror and rejection towards otherwise extremely healthy food that's full of vitamins and minerals + animal fat, the fat that literally fuels your brain.