
If you skip all the decorations to guise the cake as a log, this makes a scrumptious chocolate roulade. This is definitely not a one bowl recipe. It takes a few extra steps than our usual endeavor, but it is really pretty simple. Notice that the list of ingredients consists of four things: chocolate, heavy cream, egg whites and sugar.
BUCHE DE NOELFor the cake:8 oz semisweet (or bittersweet) chocolate, finely chopped
1 cup heavy cream
7 eggs whites
2 Tablespoons sugar
For the filling and glaze 1 lb semisweet chocolate
2 cups heavy cream
another 1/2 cup heavy cream for the filling
To make the cake:
STEP 1Microwave 1 cup cream in a glass liquid measuring cup (4 cups capacity) until it comes to a boil (about 1 minute). Add the chocolate (8oz) to the cream and let sit for a minute

and then whisk together until smooth, making sure the all the chocolate is melted.

This is our ganache for the cake.
STEP 2 Beat the eggs whites on medium speed until frothy (use the whisk attachment if using Kitchenaid mixer).

Increase the speed to medium-high and gradually add the sugar.

Beat until stiff glossy peaks form. (We got somewhat overzealous and over beat the eggs slightly but this meringue cake is so forgiving that it all turned out okay.)

Take about 1/4 of the whites and mix it with the ganache to lighten it

then dump the whole thing to bowl of whites. Gently fold together.

Pour the batter in a half-sheet pan (or a cookie sheet) lined with greased parchment paper. It is very important to grease the parchment; it makes it easier to peel and roll the cake later.

Bake at 375F for about 15 minutes or until a toothpick inserted in the center comes out clean. Cool completely.
To make the glaze and filling:Microwave 2 cups cream in a glass liquid measuring cup (4 cups capacity) until it comes to a boil (about 1 1/2 minutes). Add the chocolate (1 lb) to the cream and let sit for a minute or so and then whisk together until smooth. Allow to cool. This is our ganache for the filling and glaze.
Now we'll make chocolate "mousse" for the filling. Whisk the 1/2 cup cream until thickened.

Add 1 cup of the cooled ganache

and beat until stiff.

Refrigerate the "mousse" until ready to use.
Save about 1/8 cup of the remaining ganache to use as glue for the
meringue mushrooms (if you're making them) and the rest can be used to glaze the cake. The glaze can be kept at room temperature until ready to use.
To assemble the cake:Release the sides of the cake from the pan by running a knife around the cake. Spread the chocolate mousse on top of the cake, leaving about an inch margin all around.

Gently roll the cake onto itself, pulling off the paper as you roll.


If needed, you can use a metal spatula to completely release the cake.

Cover the rolled cake with the used parchment paper, tucking under the paper to keep the roundish shape of the log. Refrigerate for about half an hour to let the cake set. It would also be easier to move the cake after it has been refrigerated.

Pour the glaze over the cake. Use a spatula to cover every inch of it. With a fork, make marks resembling that of a log.

Trim the edges of the log and decorate with
meringue mushrooms, fresh herbs or shaved chocolate.