Grenadine is a red-colored syrup with an unclear origin. The etymology of the name suggests French origins—the French name for pomegranate is grenade—but similar combinations are found in other Mediterranean countries, and pomegranate syrup has been extensively used as a condiment in the Middle East and the Maghreb.
Interestingly, though it is suggested that the original version used the pomegranate as a base, grenadine is nowadays made with other types of red fruit. Low-quality versions often do not incorporate fruit and mostly use fructose syrups and artificial dye, while better-quality versions usually have the right balance of sweet and tart flavors.