Curaçao is a liqueur flavoured with the dried peel of the laraha citrus fruit, grown on the island of Curaçao. A non-native plant similar to an orange, the laraha developed from the sweet Valencia orange transplanted by Spanish explorers. The nutrient-poor soil and arid climate of Curaçao proved unsuitable to Valencia cultivation, resulting in small bitter fruit on the trees. But the aromatic peel maintained much of the essence of the Valencia varietal, and the trees were eventually bred into the current laraha species, whose fruits remain incredibly bitter.
The liqueur has an orange-like flavour with varying degrees of bitterness. It is naturally colourless, but is often given artificial colouring, most commonly blue or orange, which confers an exotic appearance to cocktails and other mixed drinks.