Melt the butter. Grind the waffles very finely in the universal grinder. Mix waffle crumbs and butter. Spread the bottom of a springform pan (26 cm Ø) with oil, sprinkle with the crumb mixture and press to a smooth bottom. Chill for about 30 minutes. Soak the gelatine.
Mix yoghurt, cream cheese, orange juice, sugar and vanillin sugar. Squeeze the gelatine, dissolve and stir in 3 tablespoons of yoghurt cream. Stir into the remaining cream. Fill the poppy-seed marzipan cream into the springform pan, smooth it down and refrigerate for about 3 hours. Peel the orange so that the white skin is completely removed. Cut the orange into pieces and decorate the cake pieces with it
waiting time approx. 3 1/4 hours