Fluffy Pancakes

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.