Chocolate-Mocha Yule Log

Cake
6 egg whites
6 egg yolks
1/4 cup sugar (for the egg whites)
1/2 cup sugar (for the egg yolks)
1/3 cup unsweetened Hershey's cocoa powder
1 1/2 teaspoons vanilla
Dash of salt

Mocha Cream Filling
1 1/2 cups heavy cream, chilled
1/2 cup confectioners sugar
1/4 cup unsweetened Hershey's cocoa powder
2 teaspoons instant coffee
1 teaspoon vanilla extract

Cake Directions:
Separate eggs, putting whites in large bowl, and yolks in medium size bowl. Let warm to room temperature.
Grease the bottom of a 15 1/2 x 10 1/2 by 1 inch jelly roll pan.
Line the pan with wax paper
Grease the wax paper

Preheat oven to 375

Beat egg whites at high speed until soft peaks start to form when the beater is slowly raised.
Add the 1/4 cup of sugar (2 tablespoons at a time), beating until stiff peaks form when beater is slowly raised.

With the same beaters, beat the egg yolks at a high speed, adding the 1/2 cup sugar (2 tablespoons at a time). Beat until the yolk mixture is very thick and a lighter color (about 4 minutes).

At a low speed, add the cocoa powder, vanilla and salt, beating just until smooth.

With a wire whisk or a rubber scraper, using an under-and-over motion, gently fold the cocoa mixture into the beaten egg whites, just until they are blended (no egg white should show).

Spread evenly in pan.

Bake 15 minutes, just until surface springs back when gently pressed with fingertip.
While the cake is baking, sift confectioners sugar in a 15 x 10 inch rectangle on a clean linen towel.

When cake is ready...

 turn it out onto the confectioners sugar that's on the linen towel. Do not cool the cake before performing this step.
Lift off the pan:

Carefully peel off the paper. It will stick along the sides of the cake, so you may have to use a knife to scrape the paper away from the cake, without messing up the cake too much.  Here's how mine turned out:

Roll up jelly-roll fashion, starting with the short end, towel and all.

Cool completely on a rack, seam-side down. (About 45 minutes)

Make Filling:
Combine mocha filling ingredients in medium bowl. (I chill the bowl and beaters a little, before making the filling.)
Beat until thick.

 If not using immediately, refrigerate.

Unroll cake, spread with filling to 1 inch from edge.

Reroll and place seam-side down on plate. Trim the ends.

Cover with foil and refrigerate at least one hour.
When ready to serve, sift confectioners sugar over the log to produce "snow".
Decorate with raspberries for berries and green frosting as leaves - or alternatively green sprinkles in leaf form, as shown below.