This cake is one of those unexpected pleasures … a deeply chocolate cake made with GUINNESS STOUT! The Guinness adds a depth of flavor and texture that is sublime. The cake is not overly sweet, and is absolutely delicious! It’s also impressive, as it is baked in three 8″ layers and stacked high! It serves a crowd, since slices can be thin.
2 cups Guinness stout
2 cups (4 sticks) unsalted butter
1 1/2 cups unsweetened cocoa powder (preferably Dutch-process)
4 cups all purpose flour
4 cups sugar
1 tablespoon baking soda
1 1/2 teaspoons salt
4 large eggs
1 1/3 cups sour cream
2 cups whipping cream
1 pound bittersweet (not unsweetened) or semisweet chocolate, chopped
Preheat oven to 350°F. Butter three 8-inch round cake pans with 2-inch-high sides. Line with parchment paper. Butter paper. Bring 2 cups Guinness and 2 cups butter to simmer in heavy large saucepan over medium heat. Add cocoa powder and whisk until mixture is smooth. Cool slightly.
Whisk flour, sugar, baking soda, and 1 1/2 teaspoons salt in large bowl to blend. Using electric mixer, beat eggs and sour cream in another large bowl to blend. Add Guinness-chocolate mixture to egg mixture and beat just to combine. Add flour mixture and beat briefly on slow speed. Using rubber spatula, fold batter until completely combined. Divide batter equally among prepared pans. Bake cakes until tester inserted into center of cakes comes out clean, about 35 minutes. Transfer cakes to rack; cool 10 minutes. Turn cakes out onto rack and cool completely.
Bring cream to simmer in heavy medium saucepan. Remove from heat. Add chopped chocolate and whisk until melted and smooth. Refrigerate until icing is spreadable, stirring frequently, about 2 hours.
Place 1 cake layer on plate. Spread 2/3 cup icing over. Top with second cake layer. Spread 2/3 cup icing over. Top with third cake layer. Spread remaining icing over top and sides of cake.