1. honey and butter to room temperature and whisk the egg with a mixer. Add the flour and stir. Soda, slaked vinegar, stir in yogurt, then add it to the main mix. Add the chopped walnuts and mix well.
2. We spread half the dough in a greased with butter form and send in a preheated 180 degree oven for 25 minutes. Likewise, the second half of the test bake. Ready-made cakes cool and cut each into 2 parts, eventually got 4 cakes (I have some reason — the cakes were very thin, so cut them failed). To prepare the cream condensed milk, butter and honey in a saucepan and put put on a slow fire. Stirring constantly bring to a boil, then cook for another 10 minutes until soft caramel mass. The resulting mass is thoroughly cool, then add the sour cream and mix gently with a spoon (I have added some walnuts in cream). Each cake coat with cream and add up the cake. For decoration you just need a little chop the walnuts in a mortar or a knife and sprinkle the cake. Send it in the refrigerator for 6 hours impregnation, preferably overnight.