A good dehydrator is used to preserve food by removing moisture, which prevents the growth of bacteria and extends shelf life with adding preservatives. It works by circulating warm air at low temperature around food on stacked trays to dry it out, making it a great way to create snacks, like dried fruit, vegetable chips, jerky , meat , apple chips , fruit leather. It also dehydrate ingredients like tomatoes, Onions or herbs to grind into flavours powders., use for also making homemade granola, create vegetable crips or even dry ingredients for backpacking meals . It reduces food waste too