Peel skin of Raw mango and chopped in chunks.Boil it in a 1/2 cup water. Drain it. Keep cooking water aside to use it later. Mash boiked mango. Keep aside.
Transfer cooked mango pulp in a blending jar. Add salt, black salt, sugar, roasted cumin powder, and mint leaves, little cooked water in it. Blend for 1 minute
Now take 3 tablespoon of prepared paste into a serving glass. Add some ice cubes and water in it. Stir well. Garnish with mint leaves.