Make the Sour Milk: Prepare a small bowl to combine milk and vinegar, and let it rest for 5 minutes, this mixture will become sour milk.
Sift the Dry Ingredients: Prepare a large stainless bowl to sift the flour, baking powder, and baking soda. This will trap the air between the flour grains. Sift the flour and the baking powder-soda mix one more time to make it even more airy.
Add the Wet ingredients: Whisk the eggs into the sour milk. Then, add the melted butter to the sour milk. Add the sugar, salt, and whisked egg mixture to the bowl. Whisk the flour mixture until all the lumps are gone.
Cook the Pancakes: Preheat a pan on medium heat. Coat the pan with cooking oil or cooking spray, and pour ¼ cup of the batter mix into it. Using a soup ladle will allow you to keep the quantity consistent. Cook one side for 2-3 minutes or until the bubbles are formed and the edges start to brown. Resist the temptation to flip the pancake before the bubbles form. Flip the pancake using a spatula and cook until the centre of the pancake is bouncy to gentle press.