タイトルまたは説明

Drying is the world's oldest and most common method of food preservation. Drying technology is both simple and readily available to most of the world's culture. Examples of dried foods are jerky, powdered milk, dried beans and peas, potatoes in a box, dried fruits and vegetables, pasta, and rice. Canning technology is just over **0 years old, and freezing became practical only during this century as electricity became increasingly available.