
A retort packet is a type of food packaging made from a layer of flexible plastic and metal foils. It allows the sterile packaging of a large range of food and drink handled by aseptic processing. Retort is a process that uses heat and pressure to cook food in a strong, sealed package. It is the most suitable form of food preservation in rigid, and flexible packaging system. Retort packets are used in space food, camping food, field rations, etc.