Dry Foods is a method of
food preservation that works by removing
water from the food, which prevents the growth of
microorganisms and
decay. Drying food using the sun and wind to prevent spoilage has been known since ancient times. Water is usually removed by
evaporation (air drying, sun drying, smoking or wind drying) but, in the case of
freeze-drying, food is first
frozen and then water is removed by
sublimation.