Cream chargers are small canisters filled with nitrous oxide, commonly used for whipping cream in culinary applications

https://ricardohmcg949.yousher.com/comparing-nitrous-oxide-vs-co2-in-cream-chargers-what-you-need-to-know

Cream chargers are small canisters filled with nitrous oxide, commonly used for whipping cream in culinary applications, providing a quick and easy way to create light, fluffy whipped cream.