Cream chargers usually are not just for whipped cream; they may be used to create espuma or foams

https://alpha-wiki.win/index.php/Whipped_to_Excellence:_Getting_Suitable_Consistency_with_Nitrous_Oxide_Chargers

Cream chargers don't seem to be only for whipped cream; they can also be used to create espuma or foams, adding a different twist to your dishes