Peel raw and boiled mangoes and squeeze out the pulp.
Put mint leaves, mango pulp (reserving some in a bowl) and sugar in a blender jar and blend well.
Crush cumin seeds in a mortar with a pestle.
Add crushed cumin seeds, black salt, black pepper powder and salt to the blender jar and blend again.
Heat a piece of coal.
Place a small bowl in the middle of reserved mango pulp and put the hot coal in it, pour oil over the hot coal and cover immediately.
Remove the coal and add the smoked mango pulp to the blender jar and blend well.
Add 2 cups water and ice cubes and blend again.
Now rub a lemon slice on the brim of the serving glass and dip in a plate of salt.
Salt will get stuck to the brim.
Pour the drink into individual glasses, garnish with lemon slice and a mint sprig and serve chilled.
