In a large measuring cup with a spout, beat the eggs with milk until combined. Stir in the flour, mixing to make sure that there is no lumps.Set aside and let rest for 10-15 minutes.
Place 1/2 teaspoon of oil or drippings into each muffin tin well.
Place the muffin tins into the hot oven until the oil or drippings are very hot and almost smoking.
Remove the muffin tin from the oven, and divide the batter evenly among the muffin wells.
Place in the oven, close and bake for 5 minutes.
Reduce the heat to 350 °F and bake 20-25 minutes more or until puffed and very golden.
Remove and serve.
Notes
Beef drippings are traditional and I really suggest if you have a roast beef, use the drippings for this!