Soda Water, also known as sparkling water or club soda, is carbonated water that adds effervescence to drinks without adding flavor. In the context of alcohol and cocktails, soda water is a key ingredient in many mixed drinks, providing a light, refreshing fizz. It is often used to lengthen and lighten cocktails, such as the Gin and Tonic, Whiskey Highball, and Aperol Spritz. Soda water pairs well with virtually any spirit and is also a popular choice for creating non-alcoholic mocktails. Its neutral flavor makes it a versatile and essential component in the bartender's toolkit.