No buttermilk in the refrigerator? No problem! Put 2 tablespoons of white vinegar in a measuring glass and fill to the 2-cup line with milk. Let stand for about 5 minutes before using.
Wrap extra pancakes in aluminum foil and seal in a plastic freezer bag. When you’re ready to reheat, remove foil-wrapped pancakes from the bag and place in a 300ºF oven for about 15 minutes or until warm.