Peel the raw mangoes and roughly cut the mangoes. Place them along with the seed in a deep pan. Add water along with sugar, salt, black salt, pepper, roasted cumin powder, chilly powder and bring to a boil.
Let it simmer for 25-30 minutes covered. Remove from fire and cool completely. Now scrape and pulp from the mango seed and add it back to the thick syrup. Pour the syrup into a blender along with mint leaves.
It is now ready to be stored in a fridge for 2 weeks. To prepare the drink, place few ice cubes in a glass and pour 4-6tbsp of the thick syrup on the ice and top up with water. Serve chilled.
