Giant Chocolate Cake with Bittersweet Chocolate Ganache and Edible Flowers Recipe | Epicurious

Ingredients

• Nonstick vegetable oil spray
• 2 cups flour
• 1 teaspoon baking soda
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 1 cup plus 3 tablespoons unsweetened cocoa powder
• 1 cup boiling water
• 2 cups sugar
• 3 large eggs
• 3/4 cup (1 1/2 sticks) unsalted butter, room temperature, cut into 1-inch pieces
• 1 cup buttermilk
• 1 teaspoon vanilla extract
• 5 ounces unsweetened chocolate, chopped
• 1/4 cup (1/2 stick) chilled butter, cut into 1/2-inch cubes
• 3/4 cup heavy whipping cream
• 3/4 cup sugar
• Edible flowers* (for decoration)
• 1 12-inch round cake pan with 2-inch-high sides