Giffard Cassis Noire de Bourgogne is one of Giffard's premium liqueurs, considered to have a "high intensity" fruit flavor and aroma. Cassis is the classic black-currant liqueur from Europe presenting in a brilliant blood-red.
Giffard is a French company specializing in a wide variety of liqueurs and eua-de-vie among other products. Some of those extra products are flavored cocktail syrups (or "sirop"). They are generally sweetened with pure cane sugar.