Proteins separated from the yolks, beat the yolks with sugar, add flour, starch and zest of 1 lemon. The mixture should increase in volume at least two times.

Proteins vzbit in a solid foam...

...parts add the whites to the yolks and stir gently with a spoon(at this stage in any case not with a mixer)...

In a preheated 180° oven put the form with the future and forget the cake for about 40 min. the First 20 minutes the oven do not open.Readiness biscuit check wooden skewer or toothpick.

Ready biscuit cool, take from the mold and cut into 2 parts.

Next, cook the custard: 2/3 Cup. milk+sugar, put on fire and bring to a boil, but do not allow to boil.In a separate bowl mix the remaining milk+egg+flour and pour in a thin stream with continuous stirring, bring to a boil and remove from heat.Give the cream to cool, add the juice of half a lemon and zest of half a lemon+the softened butter, whisk until smooth.

In principle, the cream can be done without adding oil,only then can we increase the number of flour of up to 2 tbsp Smear our halves of the cake generously with cream , brew tea,call home and friends, and enjoy! Bon appetit!