LOOK at it.
(click ad) They're currently holding a Most Disgusting Food/Recipe Ad contest at Vintage Ads. This one, from 1954, is the worst I've seen so far: lime Jell-O®, cottage cheese, onions, mayonnaise, topped with seafood. update: hilarious historical Jell-O flipbook.
• 1940s SPAM ads.
• Spinach turned into puke brick by Stouffer's.
related: Manhattan's most disgusting Gyro posters.