INGREDIENTS
2 2/3 cups
all-purpose flour
2 1/2 cups
granulated sugar
1/2 cup
unsweetened cocoa powder
1 1/2 tsp
baking soda
1/2 tsp
salt
3
large eggs, at room temperature
2/3 cup
sour cream, at room temperature
1 tbsp
vanilla extract
10 tbsp
unsalted butter, melted and then cooled
2/3 cup
vegetable oil
1 1/4 cups
ice-cold water
3 oz
unsweetened chocolate
3 oz
bittersweet chocolate
1 cup
unsalted butter, softened
3 cups
powdered sugar*
1 tbsp
vanilla extract
1 tbsp
heavy whipping cream*