Grandpa’s Banana Cupcakes

Bahan-bahan (18 porsi)

• ¾ teaspoon fresh lemon juice
• ¼ cup milk (just shy of ¼ cup)
• 2 eggs (yolks separated)
• ½ cup butter
• 1 cup granulated sugar
• 2 cups all-purpose flour
• 1 teaspoon baking soda
• 2 teaspoons baking powder
• 1 pinch salt
• 3 bananas (ripe, mashed)