Do people in USA really find liver disgusting or is that just a movie thing?
Some do. Part of it is that a lot of people overcook their liver and turn it into rubber, or undercook it so that it is still bloody. Just right and it is delicious.
I have eaten squirrel and rattlesnake, that is probably the oddest, but it is quite good. But the most disgusting traditional food i know is Chitlins and dumplings. Boiled intestines and boiled bread. Some people insist that you loose the flavor if you rinse the intestines out first, and that you are lucky if you get the pucker because it has more meat.
Yeah, chitlins is one of those things that I won't do, even if it is a traditional Southern food. Now crackling (the fat surrounding the intestines) OTOH is delicious, especially when baked into biscuits. It's like self-buttering bread. Although one distinct memory I have from childhood was a family gathering where a bunch of the adults were in my aunt's gigantic kitchen, working on the feast, and crackling bread was one of the items on the menu. They had a particularly fatty hog to work with, so there was leftover crackling to use. So they just fried it up in small chunks and put in a basket on a table in the parlor. I came across them and thought they were some kind of sugar-dusted butter cookie twist thingys. I grabbed a handful and tossed them in my mouth. Yeah, that was the hard way to figure out what they really were -- fried fat with a dusting of salt.
Tripe is okay, though not high on my list. Had it a couple of times in a hotpot, and...well, everything tastes good when flash-boiled with chilies and garlic. And technically, it's the
lining of the stomach.
EDIT: Some other local items I won't eat: souse (basically head cheese pickled with vinegar and usually with some hot pepper) and C-Loaf. C-Loaf is difficult to describe. It's....think of the stuff that goes into a hot dog. Now think of the parts that they wouldn't even put in a hot dog. Take those parts, grind them very coarsely, let it congeal and shape into a brick.