To prepare this drink pour the cherry juice (best if from sour cherries) in a pot and bring to a boil. (you can also use a glass instead of the pot and heat it in the microwave) Add rum and grenadine, stir well. If desired decorate with whipping cream and ground cinnamon. Ingredients: 10 cl / 4 oz cherry juice 2cl / 3/4 oz  rum 1 tsp  grenadine syrup Serves 1 - 256 cal per serving Prep-time: 10 min. - Total-time: 10 min.