Beat egg whites separate with the 6 tbsp of sugar until stiff foam
Take a pan, add egg yolks and sugar, and cook until sugar dissolves. Dissolve gelatin in water and heat it up on double boiler. When sugar dissolves in egg yolks, take out from the cooker and add gelatin mixture, mix well. Then add whipped cream, egg whites and mango puree, mix well. Then place cake in cake pan, pour this mixture on cake, Keep in fridge until it settles down. Then decorate with whipped cream and serve.