I have remembered that when I was in High School a friend's mother got us jobs in the fish and chip shop where she worked.
I had to make the chips, from washing to peeling, slicing and cooking. Here they are partially pre-cooked to seal them until they are fried before sale. My mate did the same with potato cakes. It was years before I could eat chips again, but I could handle spud cakes. Mate was the opposite!