Freeze-dried food is a preservation method that removes moisture from food while keeping its structure and nutrients intact. The process involves freezing the food and then placing it in a vacuum, allowing the ice to turn directly into vapor. This results in lightweight, shelf-stable products that can last for years without refrigeration. Commonly used in outdoor activities like camping and hiking, freeze-dried meals are convenient and easy to prepare. To eat, you simply add hot water, and the food rehydrates quickly. Popular options include fruits, vegetables, and complete meals, making them versatile for various culinary needs.