Cream eggs with sugar. Pour kefir and jam, add aerated flour mixed with soda. Knead the dough.
Bake two dough bases, cool, brush with sour cream cream and put one on other. Cover the torte with chocolate glaze.
To make the cream, whisk sugar with sour cream.
To make the glaze, pour cocoa powder in boiling milk, add sugar, stir and cook through until thickens.