Squash, in the context of beverages, refers to a concentrated syrup made from fruit juice, water, and sugar. It often includes additional flavoring and preservatives. This mixture is typically diluted with water before consumption, creating a refreshing and flavorful drink. Squash is a popular choice for both non-alcoholic and alcoholic beverages due to its intense and sweet fruit flavors.

When used in cocktails, fruit syrup (squash) offers a versatile ingredient that can enhance the drink's taste profile. It acts as both a sweetener and a flavoring agent, allowing bartenders to craft balanced and vibrant cocktails. Commonly, squash is paired with spirits like gin, vodka, or rum, and can be mixed with soda water or tonic to create refreshing alcoholic drinks. The concentrated nature of squash makes it easy to store and use, making it a convenient option for both home bartenders and professional mixologists.