Cordial mixers are concentrated, non-alcoholic syrups made from fruit juices, herbs, or flavourings that are diluted with water or mixed with spirits to create flavourful beverages. Often sweet and vibrant, cordials are used to add depth, colour, and character to cocktails and mocktails alike. Common varieties include lime, blackcurrant, elderflower, and raspberry, offering a broad palette of taste profiles from tart and citrusy to floral and rich.

When paired with soda water or still water, they create refreshing non-alcoholic drinks, while in alcoholic cocktails, they enhance complexity and balance. Cordial mixers are especially popular in layered or visually striking drinks due to their bold colors and syrupy consistency.