Prepare the Wet Ingredients:
In a small bowl, combine the milk and vinegar or lemon juice. Let it sit for 5 minutes to create a "buttermilk" effect.
Mix the Dry Ingredients:
In a large mixing bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
Combine Wet and Dry Ingredients:
Add the vanillaract and melted butter to the "buttermilk" mixture. Pour the wet ingredients into the bowl with the dry ingredients.
Gently mix until just combined. Do not overmix; some lumps are fine.
Cook the Pancakes:
Heat a non-stick pan or griddle over medium heat and lightly grease it with butter or oil.
Pour about 1/4 cup of batter for each pancake onto the pan.
Cook until bubbles appear on the surface and the edges look set, about 2–3 minutes. Flip and cook the other side until golden brown, about 1–2 minutes.
Serve:
Stack the pancakes and serve warm with your favorite toppings like maple syrup, fresh fruit, butter, or powdered sugar.