What is a substitute for grenadine syrup?
You can also substitute pomegranate molasses, which is a Middle Eastern syrup that has a stronger flavor than grenadine. To make your own grenadine, mix pomegranate and sugar in equal parts. Boil the mixture until it thickens a bit to make a simple syrup. You can also use cranberry juice cocktail or cocktail cherry juice as a substitute, depending on the recipe. Source: foodsubs.com