Add the two rums, the four juices and the grenadine syrup to the shaker.
Now fill one third of the cocktail glass with crushed ice, add four ice cubes to the shaker and shake for about 20 seconds.
At the end, pour the contents of the shaker through the bar strainer into the cocktail glass and fill it up with ice-cold carbonated water.
Notes
Tips for maximum flavor → When you freshly squeeze the juices, they can develop their flavor better.→ As in one of many recipe variations, you can also use cherry juice instead of grenadine.→ In addition to cocktail cherries, fresh fruits like pineapples or oranges are recommended as decoration.