This red syrup plays a role in many cocktail recipes such as rum runners. It also goes into desserts like tropical popsicles where you want to add a sweet, fruity flavour and a red colour. It used to be prepared using a pomegranate juice base and you can get true grenadine made of pomegranate juice, sugar and lemon juice. Alternatively, the cheaper varieties are made with sugar or HFCS, food colouring and citric acid. You can always sub simple syrup if you don't want to use grenadine.