First, you'll make the buttermilk. In a large 4-cup measuring cup (or mixing bowl), add 1 1/2 cups of milk and 1 1/2 tablespoons of vinegar. Let sit while you prepare the remaining ingredients.

Using a large mixing bowl, add the flour, baking powder, baking soda, sugar, and salt. Whisk ingredients and set aside. 

Add the eggs, melted butter, and vanilla extract to the buttermilk mixture. Whisk together until well combined.

Pour the wet ingredients into the bowl of dry ingredients. Whisk until just combined. Let sit for 5-30 minutes (I usually only do 5 minutes, but if you have the time, feel free to let the batter rest longer!). 

Add the skillet to the stove and set the stove heat to medium-high heat. Add a tablespoon of butter or olive oil to the skillet. Once heated, turn the heat down to low-medium.

Scoop the batter into the skillet. If you want smaller pancakes, use a 1/2 cup measuring cup to scoop the batter. If you want large pancakes, use a 1-cup measuring cup to scoop the batter. 

Cook the pancakes on the skillet for a few minutes each side. You'll know they are ready to flip over when you see the batter start to bubble up.

Enjoy!!