Cut watermelon and apples in pieces. Take a juicer, add watermelon and apple pieces and grapes into it and take out the juice of all together. Take it out and add orange squash, 1 tbsp of each black Salt and sugar powder into it and mix all very well.
Muddled mint leaves in a muddler and also chopped few pieces of watermelon and apple.
Take a serving glass, add muddled mint leaves and chopped fruits into it and then add ice cubes into it and then pour the mix fruit juice over it and serve it chilled.