Nearly all the foods mentioned in this thread are among my favorite:
Tuna, sashimi, dark chocolate, deviled eggs, boiled eggs, any kind of eggs, liver and onions, limburger cheese, microwave dinners, blue cheese, capers, liverwurst, okra, pate, basil, mustard (though I’m not too fond of turmeric-flavored French’s yellow mustard), ricotta cheese, kidneys, coconut, (non-black) coffee, (non-alcoholic) beer, licorice, blueberries, bananas, celery (raw and cooked), mayonnaise, bell peppers, onions, cabbage, chicken (although I find American chicken to be bland), rice, mushrooms, lobster, olives, asparagus, snails, turkey stuffing, sausage, oysters, fish roe, octopus and squid tentacles, guacamole, (not deep-fried) garden rolls, cilantro leaves, lamb, maraschino cherries, licorice
Foods mentioned that I don’t particularly like the taste of, but I’m not offended by them in any way:
Black coffee, water chestnuts, buttermilk, durian, squash
Foods mentioned that I find offensively flavorless:
Canned spinach, canned beets
Mayonnaise is mostly egg and oil. I don’t think that vinegar is a necessary ingredient in mayonnaise.