Beat butter (I used margarine), add sugar and again vzbit. Enter the eggs one by one, each time whisking the dough. Then add the yogurt, baking soda, lemon juice and zest, vanilla sugar and flour. You get a lush thick mass. The original recipe uses the juice and zest of 3 lemons.

The form (20 cm) covered with oiled baking paper. Pour in the form 1/3 of the dough, flatten, 100 gr. berries (I have black currant, BlackBerry) to priporoshit flour and spread on the dough, some of them sinking. Bake the cake for 20-30 minutes. Similarly, bake 2 Korzh.

Beat 2 cups chilled cream with powdered sugar until fluffy mass. Add a top coat of cream and beat again. Caution! When adding thickener, cream can quickly turn into a solid mass! So you need to stir them a few seconds to obtain the obedient fluffy mass necessary to lubricate the cakes. To assemble the cake, coat the cakes with cream, to decorate on your own.