A cocktail shaker cup is a device used to mix cocktails by shaking them. They are usually made of metal or glass, and have a tight-fitting lid with a small hole in the top.

To use a cocktail shaker cup, first add the ingredients for the cocktail to the cup. Then, fit the lid on top and shake vigorously for a few seconds. The shaking will mix the ingredients together and create a frothy head on the drink.

Cocktail shaker …