Sour Cocktail Making: What’s A Sweet And Sour Drink Mix And How To Make It?

The spirit, citrus, and sweetener elements form the foundation of many cocktails, often known as sour cocktails. In fact, the sour cocktail formulation has existed as long as bartenders have been creating drinks. A sweet and sour drink mix can thus be used in any cocktail that requires balancing liquor with citrus and sugar. Take, for example, the classics like the Whisky Sour or Tom Collins. Read ahead to understand what the mix includes and how to make it at home. 

What Is Sour Mix?

Sour mix is also called a sweet and sour drink mix. It is a non-alcoholic mixer used to create cocktails that provide acidity and sweetness in a single serving. It is made up of citrus juice and simple syrup (sugar water). Many commercially available sour mixes contain additional flavourings, preservatives and stabilisers to help extend the shelf life of the product. A sour mix replaces two separate cocktail elements (citrus juice/sour element and sweetener) with a pre-mixed option.

The basic flavour profile of sour mix is a bright citric acid flavour from the lemon/lime, complemented by a slightly balanced sweetness. Both profiles work together to provide structure to the cocktail, rather than complexity.

What Are Sour Cocktails?

Sour cocktails are one of the oldest categories of mixed drinks, with references coming from as early as the 19th century. A traditional sour consists of a base alcohol, citrus and a sweet element to balance the acidity. Sour cocktails can be created using whisky, gin, rum, tequila, pisco or brandy. 

Most sour cocktails rely on the classic 2:1:1 ratio, i.e., 2 parts spirit, 1 part sweet, 1 part sour. If you’re using a pre-blended sweet-and-sour drinks mix for sour cocktails, don’t swap exactly because the sour mix may be overly sweet or tart. Pre-made mixes, especially commercial ones, are often far more sugary than fresh citrus and simple syrup, meaning a strict 2 parts spirit, 1 part mix, 1 part mix will yield a cloyingly sweet, unbalanced drink. The simplest (and easiest) swap is to combine 2 parts spirit and 1.5 parts mix. For a dry and balanced version, use ¾ sweet and sour mix with ¾ fresh juice (lemon or lime). This cuts the heavy sugar of the commercial mix by introducing fresh acidity.

What Goes Into A Traditional Sour Mix?

Traditional sour mix generally contains:

• 1 cup Fresh lemon juice

• ½ - 1 cup Fresh lime juice

• Simple syrup

  • 1 cup sugar

  • 1 cup water

The lemon contributes higher acidity with its sharpness, while the lime develops a smoother, floral acidity. It’s best to use freshly squeezed juice when creating the sweet-and-sour drinks mix. 

Building sour mixes from home is quite simple. First, you make a simple syrup by heating sugar in water, letting it dissolve, and then cooling it down completely.  The cooled-down syrup is combined with freshly squeezed lemon and lime juices. The overall approach is fundamentally similar in most cases; however, specific ratio recipes may vary between cocktails. 

Homemade Versus Commercial Sour Mix

Many modern cocktail bars emphasise using completely fresh ingredients for the purposes of developing flavour accuracy. Commercial sour mixes are typically produced with regard for consistency and shelf stability, whereas homemade sour mixes depend on fresh citrus juices and sugars. Therefore, homemade sour mixes offer a more cleanly defined citrus profile and a more exact balance between sour and sweet than commercial sour mixes.

Cocktails That Commonly Use Sour Mix

That same sweet-and-citrus base is the foundation of several popular drinks:

• Whisky Sour cocktail – whisky, citrus and sweetener, sometimes with egg white.

• Vodka Sour cocktail – vodka with a citrus-sweet basis.

• Tom Collins cocktail – gin, citrus, sweetener, club soda.

• Amaretto Sour cocktail – an equilibrium of almond liqueur and fresh citrus.

Drinks are similar to each other, but they taste different due to the flavour profile of the base liquor or spirit used in making cocktails.

Conclusion

A sweet and sour drinks mix simplifies one of the most recognised formulas for cocktail creation, balancing sweetness with a citrus component. Understanding how to use sour mixes not only simplifies cocktail making at home but also provides the base for experimenting with other flavours and variations.  Ultimately, the goal of using sour mix is to provide the right amount of acidity, sweetness and flavour of the liquor in a cocktail, regardless of the base spirit. 

*Drink Responsibly. This communication is for audiences above the age of 25.