Peel the mangoes, cut into pieces and blend. Whip the cream and put in a cool place. Whisk the egg whites and 25 g of sugar until stiff. Put the remaining sugar and 2 tablespoons of water in a saucepan and cook without allowing it to caramelise. Pour the cooked sugar over the yolks, whisking to obtain a froth. Add the yolks to the mangoes, stirring with a spatula. Add the stiffly beaten egg whites delicately to the mixture and pour everything into the whipped cream. Put in a cool place. Serve in dessert bowls and garnish with pieces of mango.