Dark Chocolate Coconut Sour Cream Snowball Cake

Ingredients (16)

• 1 1/4 cups plus 1 Tablespoon brewed coffee
• 3/4 cup unsweetened cocoa powder
• 2 1/4 cups sugar
• 1 1/4 teaspoons Kosher salt (reduce to 1 teaspoon if using table salt)
• 2 1/2 teaspoons baking soda
• 2 large eggs
• 1 egg yolk
• 1 1/4 cups plus 1 Tablespoon buttermilk
• 1 cup plus 2 Tablespoons canola oil
• 2 teaspoon vanilla extract
• 2 1/2 cups plus 2 Tablespoons all purpose flour, sifted
• 16 ounces sour cream
• 1 cup granulated sugar
• 3 cups sweetened shredded coconut
• 8 ounces Cool Whip, thawed
• Additional 1/2 cup shredded coconut, for garnish