Old-Fashioned Chocolate Layer Cake (America’s Test Kitchen) Recipe - (3.7/5)

Ingredients

• Frosting:
• 12 Tbsp. (1 1/2 sticks) unsalted butter, very soft (plus extra for greasing pans)
• 1 3/4 c. unbleached all-purpose flour (plus extra for dusting pans)
• 4 oz. unsweetened chocolate, coarsely chopped
• 1/4 c. cocoa
• 1/2 c. hot water
• 1 3/4 c. sugar
• 1 1/2 tsp. baking soda
• 1 tsp. salt
• 1 c. buttermilk
• 2 tsp. vanilla
• 4 large eggs
• 2 large egg yolks
• 16 oz. semisweet chocolate, finely chopped
• 8 Tbsp. (1 stick) unsalted butter
• 1/3 c. sugar
• 2 Tbsp. corn syrup
• 1/4 tsp. salt
• 1 1/4 c. heavy cream (cold)