Mix flour, sugar and baking powder. Add the eggs, oil, orange peel, orange liqueur, milk and cream and mix until smooth with the whisk of the hand mixer. Halve the dough. Stir the poppy seed filling into one half
Grease a ring cake tin (approx. 2.5 litres capacity) and sprinkle with flour. Place the doughs alternately in the mould and marble them in a circle with the handle of a tablespoon. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for about 1 hour
Take the cake out of the oven, let it cool down on a cake rack for about 15 minutes, turn out of the tin and let it cool down for another 2 hours. Mix icing sugar with lemon juice to a thick icing. Pour the icing onto the cake so that it runs down the edge of the cake slightly, let it dry for about 30 minutes
waiting time approx. 2 3/4 hours