Freeze-Dried, Ready-to-Eat, Cookies and Cream Ice Cream Sandwich. Enjoy your ice cream just as the Astronauts do – the freeze-dried way! Astronaut Ice Cream, as well as other freeze-dried food items, have been aboard space missions since the early Mercury Missions. They continue to be used on NASA missions today. How is Astronaut Ice Cream Freeze-Dried? Freeze-drying, or lysophilisation, removes water from the ice cream by lowering the air pressure to a point where ice shifts from a solid to a gas. The ice cream is placed in a vacuum chamber and frozen until the water crystalizes. The air pressure is lowered, creating a vacuum, forcing air out of the chamber; next heat is applied, vapourising the ice; finally a freezing coil traps the vaporized water. This process continues for hours, resulting in a perfect freeze-dried ice cream slice. – Net Weight 31g, Made in the USA – Produced in a facility that also processes peanuts, milk, soy, wheat, gluten, egg and tree nut ingredients. – Calories 120 All our Astronaut Foods have the Certified Space Technology insigna on the packaging to indicate that they are the same range as used in space by NASA Astronauts. The brand Astronaut Foods was created in 1975 in conjunction with the National Air and Space Museum in the USA to provide authentic foods that had been in space to their museums customers.