Peel the skin of the mangoes and cut into small pieces and in a pan add mango pieces, ginger and black pepper and boil it with a cup of water till mango became soft.
When it cool down put boiled pulp in the blender and add sugar and salt and blende it.
Pour into a big bowl add one litre water in it and sieve it. Mix cardamom powder, black salt and cumin powder in it.
Take mint leaves into blender with a cup of water and Churn a little add this water also.
Add 3 cup more water and chill it for a few hours before serving.
Pour the panna in glasses with some ice cubes.
Garnish with mint leaves and serve chilled.
