Created by Derf on November 19, 2011
Step 1: Preheat oven to 350 degrees. Butter and line three 9 inch cake pans with parchment paper, or instead of lining use non stick cake pans and just butter well.
Step 2: Combine the flour, cocoa, brown sugar, granulated sugar, baking soda and salt in a large mixing bowl; blend well, add the butter with the mixer on low, blend until crumbly.
Step 3: Stir the milk with the lemon juice. Add half the milk mixture, blending on low speed for 1 minute, increase the speed to medium. Beat in the remaining milk mixture, eggs, and vanilla until batter is smooth, scraping the sides of the bowl as needed.
Step 4: Divide the batter evenly into the prepared pans. Bake for 25 minutes or until a toothpick inserted into the centre of one layer comes out clean. Cool in the pan for 10 minutes. Turn out onto a rack and cool completely.
Step 5: Frosting:. In a clean bowl, beat the butter until creamy, beat in the eggs and vanilla until light; sift icing sugar with the cocoa; add the icing sugar mixture and beat until fluffy. Frost between the layers, adding a few berries on top of the frosting on each layer. Frost the sides and the top of the cake.
Step 6: In another bowl combine the frozen berries and the berry sugar, mix to coat. Place half a dozen berries in the middle top of the cake on top of the frosting. Serve the rest of the berries beside each slice of the cake.