Whipped-cream charger

A whipped cream charger (also called whippits, whippets (from the brand name Whip-It), nossies, nangs, or chargers) is a steel cylinder or cartridge filled with nitrous oxide (N₂O) that is used as a whipping agent in a whipped cream dispenser. The narrow end of a charger has a foil covering which is broken to release the gas. This is usually done by a sharp pin inside the whipped cream dispenser. The nitrous oxide in chargers is also used to power model rocket engines.