Pancakes

 3/4 cup milk
 2 tablespoons white vinegar
 1 cup all-purpose flour
 2 tablespoons white sugar
 1 teaspoon baking powder
 1/2 teaspoon baking soda
 1/2 teaspoon salt
 1 egg
 2 tablespoons butter, melted

Combine milk with vinegar in a medium bowl and set aside for 5 minutes to "sour".

Combine flour, sugar, baking powder, baking soda, and salt in a large mixing bowl. Whisk egg and butter into "soured" milk. Pour the flour mixture into the wet ingredients and whisk until lumps are gone.

Heat a large skillet over medium heat, and coat with cooking spray. Pour 1/4 cupfuls of batter onto the skillet, and cook until bubbles appear on the surface. Flip with a spatula, and cook until browned on the other side.