INGREDIENTS
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Cake
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1/4 pound unsalted butter, softened
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1 cups sugar
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3 large eggs, separated
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1 1/2 cups all-purpose flour
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1/2 tsp. baking soda
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1/2 tsp. salt
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2 tsp. cocoa powder
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1/2 cup buttermilk
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3 tsp. strong coffee
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1 tsp. vanilla extract
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Glaze
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3 cups confectioners sugar
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3/4 cup unsweetened cocoa
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1 stick butter, softened
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3 - 4 tablespoons heavy cream
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1 teaspoon vanilla
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1/2 cup walnuts, chopped