Separate the yolks from the whites, incandescent to mix with sugar to weight increased 2-3 times in volume. Gradually add the flour and starch, knead the dough. Proteins (always chilled) beat in the lush foam and carefully add to the batter, knead, put in greased razumnoy form. Immediately bake in the oven at 220 C for about 40 minutes (focus on your oven). I added about 1 tsp of grated lemon peel.

The cooled cake cut into 2 Korzh. Gelatin dissolved in 2 tbsp boiling hot water. Cook the jelly according to the instructions, only use less water (I have the instructions for the 2 packs were 800 ml, I added 500, used orange juice 2.5 oranges, only a little diluted water to the desired volume). Allow to cool.

Half of the cake put in the form, lined with cling film. Put the grapes (I took Kish-Mish entirely in the center, and big blue was cut in half and made a rim), pour the orange jelly.

Put second part of sponge cake, put into the refrigerator for 30 minutes.

After 30 minutes in the yogurt add the cooled gelatin in a thin stream (swirl), knead well and immediately pour the cake. Decorate according to your mood. In this embodiment, a set 2/3 of the orange, cut down right before the test, yoghurt, it needs to hold. Decorated with grapes and orange marmalade, orange slices possible. Cooking birds step by step look http://www.povarenok .ru/recipes/show/127 57/ put into the refrigerator for 3 hours.