Best Chocolate Cake

Ingredients

• 8 ounces bittersweet chocolate finely chopped
• 2/3 cup dutch process cocoa sifted
• 2 teaspoons instant espresso powder
• 1 cup boiling water
• 388 1/2 grams all purpose flour cups
• 1 cup granulated sugar
• 1/2 cup light brown sugar packed
• 1 teaspoon salt
• 1 teaspoon baking soda
• 1 cup sour cream at room temperature
• 1/2 cup vegetable oil
• 4 large eggs
• 1 egg yolk
• 1 tablespoon white vinegar
• 2 teaspoons vanilla extract
• 2/3 cup granulated sugar
• 4 large egg whites
• 1/4 teaspoon salt
• 340 grams unsalted butter cut into 12 pieces and at room temperature
• 12 ounces semisweet chocolate melted and cooled slightly
• 1 teaspoon vanilla extract

Nutrition

• Calories : 860 calories
• Carbohydrate : 96 grams
• Cholesterol : 160 milligrams
• Fat : 53 grams
• Fiber : 5 grams
• Protein : 10 grams
• SaturatedFat : 27 grams
• Sodium : 420 milligrams
• Sugar : 64 grams