INGREDIENTS
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For the Cake:
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1 1/2 cups all-purpose flour
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1/2 cup unsweetened cocoa powder
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1 tsp baking powder
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1/4 tsp baking soda
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1/4 tsp salt
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2 sticks (8 ounces) unsalted butter, at room temperature
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1 1/3 cup sugar
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2 large eggs
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1 1/2 cup sour cream
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1/3 cup red raspberry jam or Cherry jam
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1 tsp water
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For the Frosting:
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5 ounces semisweet chocolate, chopped coarsely
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1/2 cup sour cream, at room temperature