An updated bitter grapefruit aperitif in the Milanese style? A triple sec thats grapefruit instead of orange? What is this Citron Sauvage? Citron Sauvage is a grapefruit liqueur which you’ll find eminently useful with a capital U. Substitute it for Triple Sec in a Margarita for a beautiful pink hued cocktail. Add a dash to a Hemingway to accentuate the bitter grapefruit flavors. Just add a splash of soda for a refreshing spritz or start opening up new variations on a Negroni. Its a little taste of summer in a glass. 16% abv.