Eggs When something starts pecking its way out of the shell, the egg is probably past its prime. Dairy Products Milk is spoiled when it starts to look like yogurt. Yogurt is spoiled when it starts to look like cottage cheese.
Cottage cheese is spoiled when it starts to look like regular cheese.
Regular cheese is nothing but spoiled milk anyway and can't get any more spoiled than it is already. If it makes you violently ill after you eat it, then the mayonnaise is spoiled. If opening the refrigerator door causes stray animals from a three-block radius to congregate outside your house, the meat is spoiled. Lettuce Bibb lettuce is spoiled when you can't get it off the bottom of the vegetable crisper without Comet. Any canned goods that have become the size or shape of a basketball should be disposed of.