Kue Mayones Coklat

Bahan-bahan (16 porsi)

• ¾ cup mayones
• 1 ¼ cup kopi hangat
• 2 large eggs, (room temperature)
• 2 teaspoons ekstrak vanila
• 2 cups all-purpose flour
• 1 ½ cups gula pasir
• ¾ cup unsweetened cocoa powder, (not Dutch process)
• 2 teaspoons soda kue
• ½ teaspoon baking powder
• 1 teaspoon garam
• 1 cup unsalted butter (softened)
• 3 cups gula bubuk
• ½ cup bubuk kakao tanpa pemanis
• 3 tablespoons milk (more as needed)
• 1 teaspoon ekstrak vanila
• ¼ teaspoon garam