Separate 3 eggs and chill the egg white. Cream butter, 350 g sugar and vanillin sugar with the whisk of the hand mixer. Add buttermilk, 4 eggs, egg yolks, orange peel and mix. Mix flour, salt and baking powder and stir into the egg-sugar mixture in portions
Grease a ring cake tin (2.5 litres capacity) and dust with flour. Put the dough into the mould and smooth it down. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 70 minutes. Remove the cake, brush with 3 tbsp. orange juice and let it cool in the tin for about 30 minutes. Then turn out onto a cake platter, spread with the remaining orange juice and let cool off
Beat the egg whites until stiff, adding 150 g sugar. Carefully spread meringue on the cake and draw a swirl pattern with a teaspoon. Carefully flame with a Bunsen burner
waiting time 3-4 hours