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.

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.