A cocktail shaker is a tool used in mixing and preparing alcoholic beverages such as cocktails. It is a metal container with a lid that seals tightly to prevent spills. The container has a tapered shape, with a wider base and a narrower top. This design allows for easy mixing of ingredients by shaking them together. The lid has a built-in strainer to separate the liquid from the ice and other solid ingredients. The shaker is made of stainless steel.