Bake a chocolate cake. To do this: sift Flour together with cocoa powder. Eggs, egg yolks, sugar and salt stir with a whisk and heat on a water bath to about 40 degrees, pour into the mixer bowl and beat until increased in volume by 2-3 times (beat at high speed of not less than 10-13 minutes). Sifted flour and cocoa, add to the batter in 2-3 hours, stirring gently with a spatula. Melt the butter until liquid, add to it part of the test, mix well and pour to the main dough, mix well. Put in a baking dish and bake at 180 degrees for 35 minutes. Completely cool on a wire rack and allow the cake to "rest" for 5-6 hours, wrapped it in plastic wrap.

To prepare the spray for the cake: in a saucepan pour the sugar, add water, bring to the boil and cook for 5 minutes. Add rum, remove from heat and cool. To prepare the cream: 1 in the bowl of the mixer whip the mascarpone cheese a little and to it gradually add the milk. To prepare the cream 2: pre-softened at room temperature butter lightly beat until fluffy with a mixer, gradually add the powdered sugar and add cocoa powder.

First, the sponge cake a little to cut the sides, giving the shape similar to a hedgehog. All trimming to crumble into fine crumbs. With a cooking ring cut round the middle (her crush is not necessary). The whole basis is cut into three Korzh.

To begin to assemble the cake: put the dish on the bottom cake. Cut midway to cut thin circles - top and bottom. The bottom put in the bottom cake. Soak the cake, spread an even layer of the cream 1. Put the second cake, too, to impregnate, to cover with cream. put the third Korzh, to impregnate. In the middle to fill biscuits "Mushrooms", leaving a little for decoration., cover cut from the middle top.

Left biscuit crumbs mixed with 1 part of cream to make a viscous mass, and from it to form the back of a hedgehog. Leave just a little of this dough for the ears and eyebrows.

Cover the whole cake (except the snout of a hedgehog) cream 2, smooth a thin layer. Muzzle cover cream 1. Cream 1 should be lighter cream 2. Cake put into the refrigerator for 1 hour.

The remaining 2 to put the cream in a pastry bag with a suitable nozzle and deposited on the body of the hedgehog in the form of imitation needles. Of dough to make ears or eyebrows. Eyes and a nose can be made of black currant or chocolate dragee. Put into the refrigerator for 4-5 hours and serve on a festive table chilled.