My Dad made us eat sauerkraut. Once. I threw up. He never did it again.
Oddly enough, there weren't any foods that we were made to eat. My Dad, who was a nutritionist, would NOT let us put salt on anything at all. Sometimes we ate in the living room on TV trays and I always opted to eat in the dining room so I could a) read a book at the table and b) put salt on my food.
Now I hardly ever add salt to my food.