Peel mangoes and desseed them. Grind mangoes until smooth puree formed. Now sieve the puree just to make sure there are no lumps.In another pan mix jaggery powder + lime juice. Cook until thick syrup is formed. Allow to cool.Once the syrup is cool add the sieved mango pulp. Give it a nice whisk. Finally add black salt, mint leaves and spiced powder if using. Combine all nicely.Store them into air-tight bottles and place them into fridge. Just shake the bottle before serving and serve them chilled with icecubes. Fill 2 tbsp of mango squash in medium sized glasses and fill rest with water.Check the taste if you want them sweeter add a little more squash.