INGREDIENTS
1/2 cup
hot water
3 oz
unsweetened chocolate, chopped
1 tbsp
instant coffee powder
1/2 cup
unsalted butter, softened
2 cups
sugar
2
large eggs
1 tsp
vanilla extract
2 cups
sifted cake flour, such as Swans Down
1 tsp
baking soda
1 cup
sour cream
8 oz
semisweet chocolate, chopped
1/2 cup
heavy whipping cream