What is a cocktail shaker?

A cocktail shaker, also known as a Boston shaker, is a two-piece cocktail shaker made up of a metal cup and a glass or plastic mixing glass. The metal cup is fitted with a tight-fitting lid and a metal or plastic strainer. The glass or plastic mixing glass fits inside the metal cup and has a tight-fitting lid of its own.

How do you use a cocktail shaker?

To use a cocktail shaker, you first …