Grind the yolks with sugar.

Beat egg whites in a solid foam.

In the yolk with sugar, add margarine, mix everything carefully. Then add the whites and carefully stir the resulting mass. Next, you will add the vanilla sugar, baking soda, quenched with vinegar and flour.

All thoroughly and knead the dough.

Roll out the dough 1 cm thick and cut biscuit and pastry molds. Then put biscuits on a baking sheet covered with parchment paper beforehand. Preheat the oven to temperature of 220 degrees (about 5 minutes). Put the baking pan with the biscuits and make a fire in the oven less. After 10-15 minutes, the cookies will be ready.

Ready to give the liver to cool and pour over the chocolate, pre-melted in a water bath. Biscuits "Sand" finish. You can now please yourself and loved ones.