What is a "sour mix" in cocktails?

The term "sour mix" refers specifically to a mixture that consists of lemon or lime juice combined with sugar. This combination creates a balance of tartness from the citrus and sweetness from the sugar, making it an essential ingredient in many cocktails, especially those that require a sour flavor profile. Sour mix is commonly used in drinks like the Whiskey Sour, Margaritas, and Daiquiris, enhancing the overall taste with its refreshing and tangy qualities.

Understanding this concept is crucial for bartenders, as it allows them to craft cocktails that appeal to a wide range of palates, utilizing sour mix to achieve the desired flavor balance in various recipes.