Anything beef. My folks had a thing for lots of fat on the beef, or in the ground beef and I hated the gristle. I also hated the pieces and chunks of blood vessels that were evident. I also grew up with crunchy hamburgers that could be a challenge to eat. Spaghetti consisted of cooked to death pasta with crunchy spaghetti sauce. Mom would cook the ground beef to cinders, add a can of tomato paste and a can of water and that was it. A bare dash of salt/pepper was considered "highly seasoned". Fresh vegetables were out because "that's what poor people eat" and all our veggies came from cans (except the collards) and were cooked into slime (including the collards). Didn't have to even chew the cabbage. Open your mouth and the cabbage would just slide on down. Whole wheat bread was considered stale, even if it was fresh out of the oven because it wasn't soft and squishy like Wonder Bread, so home made bread was out. We used some nasty margarine because Mom wanted the containers to use as bowls. So, I had very few things that I truly enjoyed. I did enjoy the times that we were served Uncle Ben's Curried Rice, but she decided it was too spicy and stopped serving it.
For some strange reason, when my folks didn't want to deal with something food related, as in serving it or allowing me to try it, they told me it would "give me worms". Pretty danged effective. I once asked about broccoli. "No. You don't want that because it will give you worms." Sometimes, it backfired because you can bet that I remembered which the "worm giving foods" were. They would forget and try to give me something they previously tried to discourage me from. I never had broccoli until I moved away from home and had figured out that 75% of the food out there will not give one a case of the worms.
So, lots of dislikes and aversions disappeared once I left home and became braver about trying things. I love broccoli. I love properly prepared vegetables, preferrably fresh, of all types. I never did get over the beef aversion, though.