Ombré Mocha Bundt Cake

Ingredients

• 1 1/2 cups butter, softened
• 2 1/2 cups sugar
• 5 eggs
• 1 cup sour cream
• 21/2 teaspoons vanilla extract
• 3 3/4 cups plus 1 tablespoon flour, divided
• 1 3/4 teaspoons baking powder
• 1 teaspoon salt
• 2 tablespoons cocoa powder
• 1/4 cup instant coffee
• 1/4 cup sugar
• 1/4 cup boiling water
• 1 1/2 cups powdered sugar
• 1/4 cup heavy cream
• 1 teaspoon vanilla extract
• Pinch of salt
• Chocolate shavings
• Chocolate covered espresso beans