A jigger is a small measuring device used in bartending to accurately measure and pour spirits and other liquids. Typically made of stainless steel, a jigger usually has two sides, with one side measuring 1.5 ounces and the other 1 ounce. This ensures that cocktails are made with the correct proportions, which is essential for achieving the desired flavor and strength. Using a jigger helps bartenders maintain consistency in their drinks, which is important for customer satisfaction. It also aids in controlling alcohol consumption, as precise measurements can prevent over-pouring. Overall, the jigger is a fundamental tool in the world of mixology and cocktail preparation.