Use cream and any other soluble ingredients you desire. Avoid all grainy or solid ingredients, and finely strain the rest. Some siphons will give you more leeway in the way of ingredients.
To sweeten, use confectioners sugar or liquid sweetener. Do not use granulated sugar.
Fill bottle only to about 3/4 full, place the rubber seal in the opening and screw on the dispenser head. Attach the decorating nozzle.
Place the Nitrous Oxide cartridge in the holder and screw the holder into the filler valve. A hiss lets you know that the gas has been released from the cartridge into the can. Then remove the holder and cartridge. (Warning: Most siphons take only 1 cartridge. For your safety, read the siphon instructions before using.)
Vigorously shake the dispenser several times vertically. Shake up to 10 times if using well-chilled sterilized or light cream. (Note: Too much shaking will make it too stiff to come out of the bottle.)
To dispense, hold the dispenser vertically, with the nozzle facing downwards, about 1/4" above the object to be decorated, and squeeze the lever with your index finger.
The decorating nozzle should be removed and washed with hot, sudsy water right after use. (It prevents ingredients from drying inside the nozzle.)
Store a filled, or partially filled, dispenser in the refrigerator. It keeps well for several days. Shake the dispenser vertically before using it again, to mix the gas and cream mixture thoroughly.
Before opening a spent, or partially spent, dispenser, press the lever until all the gas has escaped.
Dismantle and clean thoroughly with sudsy hot water, rinse, and allow to air dry. Store dismantled.
! CAUTION !
Misuse of Nitrous Oxide can lead to tragic physical consequences.