Canned foods are part of our daily lives. Like a lot of other products in daily use, we tend to take them for granted. Canned foods are extensively used. The canning industry is one of the largest industries in the world.

The sequence of steps in the canning process differs with the product. Fruits and vegetables may be peeled or pitted, and have stems removed prior to canning. Some vegetables receive a heat treatment before they are placed in the can to remove air and improve packing.