Triple Sec is a type of orange liqueur that was derived from Curaçao, a liqueur made from sun dried native orange peels on the island of Curaçao. Triple Sec was invented in 1834 by Jean-Baptiste Combier, a distiller in Saumur, France. Combier still makes the original Triple Sec recipe, which calls for three distillations, and is drier than the original Curaçao, at 80 proof.

Today, orange liqueurs that are labelled Triple Sec are clear and taste primarily of oranges. Interestingly enough, both Cointreau and Grand Marnier once called themselves Triple Sec, though they no longer do. Some common brands of Triple Sec are the aforementioned Cointreau, Citronge (made by Patron), Triplum (from Luxardo), Hiram Walker, and Bols.

Generic Triple Sec is usually inexpensive, low quality, very sweet, and artificially flavored. 

Some popular cocktails containing Triple sec

  • Countrypolitan — Corn Whiskey, Triple sec, Lime juice, Cranberry juice
  • Paraiso — Blanco tequila, Campari, Triple sec, Strawberry shrub, Lemon juice
  • Gun Club Shrub — Gold rum, Triple sec, Pineapple juice, Orange oleo-saccharum, White balsamic vinegar
  • Cupid's Revenge Cocktail — Brandy, Champagne, Triple sec, Pomegranate Liqueur, Maraschino Liqueur, Maraschino cherry, Lemon juice
  • Cosmopolitan Milk Punch — Vodka, Tawny port, Triple sec, Tonic water, Cardamom, Cranberry juice, Milk, Star anise, Lime juice, Sugar, Bay leaf, Clove, Pomegranate molasses, Orange peel, Grapefruit peel
  • Vampari — Blanco tequila, Campari, Triple sec, Blood orange peel, Blood orange
  • Eucalyptus Martini — Gin, Triple sec, Simple syrup, Lime juice, Egg white
  • Break Bumper — Bourbon, Triple sec, Bitters, Peychaud's Bitters, Sparkling white wine, Lemon peel, Rosemary
  • Satsuma Margarita — Tequila, Triple sec, Satsuma juice, Lime juice, Agave syrup
  • Citrus Fever — Spiced Rum, Light rum, Triple sec, Cardamom bitters, Grapefruit syrup, Lemon juice