
Tonic Water is a carbonated non-alcoholic mixer that lengthens a cocktail and makes it feel lighter. Ingredients like this matter most in highballs, spritzes, and refreshing drinks over ice. Bubbles change how flavor is perceived: the drink feels drier, colder, and lighter. Add carbonated components at the end and stir gently. Tonic already contains sweetness and quinine bitterness, so it is not neutral. In a Gin and Tonic, the tonic choice can change the drink as much as the gin.