German Chocolate Cake…adapted from David Lebovitz
Melt both chocolates (the two oz semi-sweet and 2 oz unsweetened) together with the 6 tablespoons of water in the microwave. Heat in 30 second increments until mostly melted. Stir until smooth, then let cool to room temperature.
In the bowl of an electric mixer, beat the butter and 1 ¼ cup of the sugar until light and fluffy, about 5 minutes. Beat in the melted chocolate, then the egg yolks, one at a time.
Whisk together the flour, baking powder, baking soda, and salt. Mix in half of the dry ingredients into the chocolate mixture, then the buttermilk and the vanilla, followed by the rest of the dry ingredients.
Beat the egg whites until they hold soft peaks. Beat in the ¼ cup of sugar until stiff. Gently fold about one third of the egg whites into the cake batter, then fold in the remaining egg whites and mix just until there's no trace of egg white visible.
Divide the batter into the 2 cake pans, smooth the tops, and bake for about 45 minutes, until a toothpick inserted into the center comes out clean. Cool cake layers completely.
While the cakes are baking and cooling, make the filling, syrup, and icing.
Mix the cream, sugar, and egg yolks in a saucepan. Put the 3 ounces butter, salt, toasted coconut, and pecan pieces in a large bowl. Heat the cream mixture and cook, stirring constantly until the mixture begins to thicken and coats the spoon.
Pour the hot custard immediately into the pecan coconut mixture and stir until the butter is melted. Cool to room temperature.
In a saucepan, heat the sugar and water until the sugar has melted. Remove from heat, and stir in the dark rum. Set aside.
Place the 8 ounces of chopped chocolate in a bowl with the corn syrup and 1 ½ ounces of butter. Heat the cream until it just begins to boil. Remove from heat and pour over the chocolate. Let stand one minute, then stir until smooth. Let cool to room temperature.
Repeat, using the syrup to brush each cake layer, then spreading ¾ cup of the coconut filling over each layer, including the top.
Frost the sides with the chocolate icing, then pipe a decorative border of chocolate icing around the top, encircling the coconut topping. Makes about 16 servings