Dehydrated onion is a processed form of fresh onion, where the moisture content is significantly reduced through drying methods such as air drying, sun drying, or freeze drying. This process helps in preserving the onion for extended periods without the need for refrigeration, while retaining much of its original flavor and nutritional value. Dehydrated onions are available in various forms, including flakes, granules, minced, and powder, making them a versatile ingredient in cooking and food manufacturing. They are commonly used in soups, sauces, snacks, and ready-to-eat meals, offering convenience and a longer shelf life compared to fresh onions.