Heat a large nonstick griddle or skillet (cast iron is best!) over low heat for 5 minutes. (If you are using an electric griddle, preheat it to 350 degrees F.) Add 1 tablespoon of oil to the skillet, then increase the heat to medium-low. Using 1/3 cup measure, ladle the batter onto the pan or griddle. Do not crowd the surface, even if this means only being able to cook a couple at a time.
(Recipe slightly adapted from The New York Times)