Nothing sings pro quite like a well-executed cocktail foam. But it's actually pretty fool proof. Fresh egg whites, ice, a shaker, and the how-to above are all you need.
How to make an egg foam
How to make egg foam without egg
*If you don’t have or eat eggs, you can use Aquafaba. It’s chickpea water and it can give a foamy texture as good as eggs do. Just replace your egg whites with 2.5cl (1oz) of Aquafaba and follow the same steps.