Orange syrup is a sweet, citrus-flavored liquid made from the juice and zest of oranges, combined with sugar and water. It is often used as a flavor enhancer in both non-alcoholic and alcoholic beverages due to its vibrant, tangy taste that can elevate the overall profile of a drink.

In the context of cocktails, orange syrup is a versatile ingredient that can be used to add a hint of citrus sweetness to various mixed drinks. It is commonly found in classic cocktails like the Mai Tai or the Zombie, where it complements the flavors of rum and other tropical ingredients. Orange syrup can also be used in modern cocktail creations, adding a unique twist to traditional recipes or serving as a base for innovative new beverages.