Canning

food preservation · history · cooking

Sealed and safe. Canning works by processing food and sealing it in airtight containers that keep air and germs out, so the food stays fresh and edible for one to five years or even longer.

Long lasting power. Most canned foods stay good for one to five years on a shelf, but some freeze-dried canned foods like lentils can last an amazing 30 years and still be safe to eat.

Ancient idea. People have been finding ways to preserve food forever, and canning is one of the smartest methods ever invented for keeping food fresh without a refrigerator.

Airtight is key. The most important part of canning is making sure the container is completely sealed so that air, bacteria, and mold cannot get inside to spoil the food.