Corn syrup is a sweet, viscous liquid made from the starch of corn (maize) and is commonly used as a sweetener in various food and beverage applications. It contains glucose as its primary sugar component, which lends it a mild sweetness. Corn syrup is often used to add body and prevent crystallization in recipes, making it a versatile ingredient in both cooking and baking.

In the context of alcohol and cocktails, corn syrup serves multiple purposes. It can be used to create simple syrups for sweetening cocktails, adding a smooth, sweet flavor without altering the overall taste profile of the drink. Moreover, corn syrup can help to balance the flavors in a cocktail, ensuring that the sweetness complements the other ingredients without overpowering them. Its thick consistency also contributes to the mouthfeel of the drink, giving it a richer texture.