Orange Curaçao is a type of liqueur that is flavored with the dried peels of bitter and sweet oranges. It originates from the island of Curaçao, located in the Caribbean, and is traditionally made from the Lahara fruit, a bitter orange native to the island. This liqueur is typically clear, though it is also available in blue and orange varieties, which are colored for visual appeal in cocktails.

In the context of alcohol, Orange Curaçao is often used as a key ingredient in many classic and contemporary cocktails. It adds a vibrant citrus flavor and a slight sweetness that enhances the overall profile of the drink. Popular cocktails that feature Orange Curaçao include the Mai Tai, Margarita, and Sidecar. Its versatility and rich flavor make it a staple in many bartenders' repertoires.