Wash the apricots, drain well, cut in half and remove the stones. Cut the apricot halves into small cubes. Chop the pistachios. Grease a ring cake tin (3 litres capacity) and dust with flour
Cream butter, sugar, vanillin sugar and eggs with the whisk of the hand mixer. Add buttermilk and mix. Mix flour, salt and baking powder and stir into the egg-sugar mixture in portions. Put half of the dough into the form. Stir apricots and pistachios into the remaining dough, except for 1 tbsp. Pour into the mould and smooth it down. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for about 1 hour and 10 minutes. Take out the cake and let it cool in the tin for about 30 minutes. Then turn out onto a cake plate and let it cool down
Wash the lemon, grate dry and grate the peel. Halve the lemon, squeeze the juice. Mix the icing sugar, half of the lemon peel and 3 tbsp. lemon juice to a thick icing, place on the cake and let it run down slightly. Decorate with the remaining pistachios and lemon peel
waiting time 3-4 hours