Start by chilling a can of full-fat Coca-Cola in the fridge for at least an hour (or overnight). Keep chilled until you’re ready to make your foam.
Pour the cold, carbonated soda into a special dispenser – it’s best to use one with a nozzle that sticks up high enough to pour back down into the can of soda and keeps everything more stable.
Turn on the machine and wait for foam to form. (It will happen quickly since your soda is cold and highly carbonated.)
Spray foam all over the top of the drink.
If you’re feeling fancy, use the nozzle to draw designs in the top of your foam for an even more unique experience.
Use a spoon or straw to drink up all that delicious goodness underneath.
So that’s how to make Cold Foam.