1/2 cup [Imperial Sugar]http://www.imperialsugar.com/]
zest of 1 Lemon
2 Tablespoons Cornstarch
Special equipment: two 10- by 2-inch round cake pans
Instructions
Make cake layers:
Preheat oven to 300 F and butter pans. Line bottoms with rounds of parchment paper. Butter again and dust both pans with cocoa powder. Tap and swirl around the cocoa to lightly coat the pans.
Finely chop chocolate and in a bowl combine with hot coffee. Let mixture stand, stirring occasionally, until chocolate is melted and mixture is smooth.
Into a large bowl sift together Imperial Sugar, flour, Divine Chocolate Cocoa Powder, baking soda, baking powder, and salt. In another large bowl with an electric mixer beat eggs until thickened slightly and lemon colored (about 3 minutes with a standing mixer or 5 minutes with a hand-held mixer). Slowly add oil, buttermilk, vanilla, and melted chocolate mixture to eggs, beating until combined well. Add sugar mixture and beat on medium speed until just combined well.
Divide batter between pans and bake in middle of oven until a tester inserted in center comes out clean, 1 hour to 1 hour and 10 minutes.
Cool layers completely in pans on racks. Run a thin knife around edges of pans and invert layers onto racks. Carefully remove parchment paper and cool layers completely. Cake layers may be made 1 day ahead and kept, wrapped well in plastic wrap, at room temperature.
Make Ganache Frosting:
Finely chop Divine Chocolate. In a small saucepan bring cream, Imperial Sugar, and corn syrup to a boil over moderately low heat, whisking until sugar is dissolved. Remove pan from heat and add chocolate, whisking until chocolate is melted. Cut butter into pieces and add to frosting, whisking until smooth.
Transfer frosting to a bowl and cool, stirring occasionally, until spreadable.
Make Raspberry Filling:
Puree the raspberries in a food processor. Press the puree through a fine-mesh strainer with the back of a spoon, removing the seeds. Heat the puree in a small pot with the sugar and cornstarch until mixture boils, stirring constantly. As it boils, it should quickly thicken. Stir in lemon zest at the end.
Let it cool complete before spreading it thinly over three layers.
Assemble Time:
With a long serrated knife, slice eat cake into two layers. Lay the bottom layer on cake stand. Take 1/3 the raspberry filling and spread it over the layer. Stay about 1/2 inch away from the edge. Lay the next layer on top. Spread another 1/3 of the raspberry filling. Place the third layer on cake and the last of the raspberry filling. Put the final layer on the top of the cake. Gently make sure that all the layers line up.
Pour some of the ganache in the middle of the top layer and with an offset spatula start smoothing out the frosting – gently pushing it toward the edge. Add more until you have worked the ganache down over the sides of the cake.