1. Cut 2 lemons into quarters. scoop out balls from watermelon.
2. Add 3-4 watermelon balls, 4-5 lemon quarters and 10-12 mint leaves into individual serving glasses and muddle well.
3. Add some ice cubes, 1 tbsp sugar syrup, salt to taste, 1 tsp lemon juice and some more watermelon balls.
4. Top with drinking soda and stir well. serve chilled.