Peel the mango and cut into large pieces. Then puree the mango meat with the lemon juice and powdered sugar and set aside.
For the cream, whip the cream until stiff and mix it with the sour cream and yoghurt. Now prepare the gelatine according to the instructions on the packet and, after cooling down briefly, fold it into the cream.
Finally, layer the cream and mango puree in a large glass bowl or directly in dessert bowls. Decorate with mango slices or chopped pistachios if you like. Now everything has to be in the fridge for about 3 hours.