The Nitrous oxide can dissolve in fat when whip under pressure â this is why liquid cream with a fat content of approx. 27% can easily be whipped using a N2O cream charger, Well, the process is quite simple and fast. Whatever you intend to the nitrous oxide gas is placed into the bottle of the dispenser this is then made pressure-tight when the head is screwed down. The N2O charger canister which contains 8 grams laughing gas is use to pressurize the liquid cream and force the Nitrous oxide gas to dissolve into it.
Depending upon the recipe this might need to be done while the contents are still warm to give the laughing gas a chance to penetrate the substance at a molecular level. When the trigger is pulled then the contents of the dispenser will be propelled out under pressure and simultaneously the nitrous oxide will expand. All the recipes include some form of fat or a gelling/thickening agent to make sure that the gas does not simply bubble out and disappear into the atmosre. That is why the N2O cream tanks can whip cream in short time.