Shaken not stirred says James Bond, we all have seen a Martini being prepared but what is the purpose of the cocktail shaker? A cocktail shaker is a device used to mix beverages (usually alcoholic) by shaking. When ice is put in the shaker this allows for a quicker cooling of the drink before serving. Barware Styles Stainless Steel 3-Piece Martini and Cocktail Shaker Set is the perfect gift under $20 for classy drinkers that want to prepare Martinis at home. It is a suitable cocktail shaker for veterans and beginners alike. Just because you’re not a bartender doesn’t mean you don’t want your mixed drinks to not taste good!