Triple sec, originally Curaçao triple sec is a type of strong, sweet and colourless orange-flavoured liqueur. It is a variety of Curaçao liqueur, an orange-flavoured liqueur made from the dried peels of bitter and sweet oranges.
“Sec” is the French word for dry. The etymology of the term “triple sec” is unclear.
Triple sec may be consumed neat as a digestif, or on the rocks. However, it is more typically used as an ingredient in a variety of cocktails
According to Cointreau, its orange liqueur was created in 1875.