Two method which can prevent rancidity of fatty foods?

Answer 1

Depends on the item... but usually comsuming it ASAP works best in all cases! :)

Proper storage is the only way to postpone rancidity. It can't be prevented entirely if the food is stored too long. Check the food package directions regarding means and length of storage.

Answer 2

You can't prevent it entirely, but you can get the most for your dollars by taking a few precautions:

1) Check the 'best if used by' date and buy the can with the longest expiration date.

2) Buy only for your particular needs. Even though a smaller can will cost more per ounce, you're not saving anything if you throw out half of a larger can that's gone bad.

3) If you have the space, you can refrigerate to get a longer shelf-life, but keep in mind that many recipes that call for shortening perform better if the fat is at room temperature. Except for perhaps pastry making, it may be best to measure what you need and leave out on the counter about 30 minutes before you begin your recipe.

Answer 3

Put the product in the refrigerator. After the use-by date, however, it is important to throw the product away.

Answer 4

Freezing the food and, for some foods, applying an acid like lemon juice.