Cream chargers are small canisters crammed with nitrous oxide, used to whip cream right now and smoothly

https://spark-wiki.win/index.php/Why_Every_Baker_Requirements_a_Reputable_Whipped_Cream_Charger_Tank

Cream chargers are small canisters packed with nitrous oxide, used to whip cream straight away and quickly, desirable for truffles and beverages.