-
Preheat the oven to 350°F/180°C.
-
Separate the
egg whites from the yolks. Beat the yolks with
3 1/2 oz (100 g) of sugar until the mixture
becomes shiny. Whisk the egg whites to stiff peaks,
adding the remaining sugar at the last moment. Fold
the whites into the yolks with a spatula.
-
Sift
together the flour, starch, and 4 tablespoons of
cocoa. Incorporate this powdery mixture to the
batter.
-
Spread the batter to a 1/4 inch (5
mm) layer on a baking sheet. Bake for 10 min.
-
Turn the sponge cake out. Set on a cooling rack.
-
Prepare the chestnut mousse and the whiskey syrup
(refer recipe).
-
Brush the syrup onto the sponge
cake. Spread on a layer of chestnut mousse about
1/4
inch (5 mm) thick. Sprinkle with chestnuts, chopped
into pieces. Roll up the sponge cake,
Cool.
-
Cut of the ends of the log at an angle and use
them to decorate the surface of the roll and 10
suggest a l knots on the log. Cover the entire
surface of the sponge cake with the remaining
chestnut mouse. Score the surface with a fork and
dust with the remaining cocoa.