Espresso Chocolate Chip Cake | The Fancy Pants Kitchen

Ingredients

• 2 & 2/3 cups (315g) cake flour (spooned & leveled)
• 2 tsp baking powder
• 1/2 tsp baking soda
• 1 tsp salt
• 3/4 cup unsalted butter, softened to room temperature
• 5 tsp espresso powder
• 1 & 3/4 cups granulated sugar
• 4 large egg whites, at room temperature
• 1/2 cup sour cream, at room temperature
• 2 tsp pure vanilla extract
• 2/3 cup whole milk, at room temperature
• 1/3 cup brewed strong black coffee, at room temperature
• 1 & 1/4 cups mini chocolate chips (see note)
• 2 cups unsalted butter, softened to room temperature
• 3 & 1/2 teaspoons espresso powder, plus more to taste
• 6 cups sifted confectioners’ sugar (sift before measuring)
• 1/2 cup heavy cream or whole milk
• 1/8 tsp salt