First take a blender put watermelon pieces, blend it and keep aside

Take a small bowl add mint leaves to the bowl, add rock salt sugar and lime pieces crushed by the colander or wooden roller pin which is used my making roti and keep aside,

Now take glass and a glass jar put crushed mint lemon-sugar mix to the glass and glass jar add ice cubes now add sugar syrup to the both of the glasses

Now add watermelon juice to the half of the glass, at the end put soda water to the glasses stir to both of the glasses and serve chilled.