Drying

The microorganisms that normally inhabit fresh foods require water in order to multiply. Removing that moisture prevents spoilage and prolongs the storage life of foodstuffs; dried foods also weigh less and occupy a smaller volume. An ancient technique, drying is very easy and cheap. Before canning and refrigeration, it was an important method of food preservation. Drying can be accomplished with direct sunlight or dry air. The chile ristras of the Southwest are an example of simple drying; whole chilies are strung into garlands and hung outdoors to dry.