Curaçao is a liqueur flavored with the dried peel of the bitter orange variety laraha, a citrus fruit grown on the Caribbean island of Curaçao.

Bitter orange, sour orange, Seville orange, bigarade orange, or marmalade orange is in a narrow sense the citrus tree Citrus × aurantium and its fruit. It is native to Southeast Asia and has been spread by humans to many parts of the world. It is probably a cross between the pomelo, Citrus maxima, and the mandarin orange, Citrus reticulata.