Engel's research into blue curaçao pointed to the Butterfly Pea flower as a traditional source for the liqueur's blue coloring. Through a seller on Etsy, he managed to purchase dried Butterfly Pea flowers, which are most commonly found in Southeast Asia, where you might encounter their being used to give drinking water a pleasing Triple sec is considered a dry liqueur which means less sweetener is added to it than Blue Curaçao. Triple sec will give you a less sweet bitter orange flavor for your drink recipe. Curaçao, in turn, is best known for its vibrant blue version, Blue Curaçao. Dry Curaçao usually has an orange shade - some more intense, some less. Rarely do you come across a colorless Curaçao, too, but that's truly an exception. ABV. There's no set ABV for either Curaçao or Triple Sec. VLzT2O.