Cream chargers (nitrous oxide, often written as N₂O) are small, pressurized steel cartridges filled with food-grade gas. They’re commonly used in whipped cream dispensers to aerate cream, creating a light, fluffy texture quickly and efficiently. When released, the nitrous oxide dissolves into the liquid under pressure and expands as it exits, forming foam. https://www.holywelldistribution.de/cream-dispensers