A freeze dryer is a machine used to preserve food and other perishable items by removing moisture through a process called freeze-drying. It works by freezing the item first and then reducing the surrounding pressure, allowing the frozen water in the item to turn directly into vapor without passing through the liquid stage. This method helps to maintain the structure, nutrients, and flavor of the food, making it last for a long time. Freeze dryers are commonly used for making lightweight, long-lasting food for camping, emergency storage, or even in space travel. Learn more: https://wave.cc