To make the batter, combine the half-and-half and eggs in a bowl and whisk until totally combined. Then throw the flour and salt into a sifter and sift them straight into the bowl. Whisk until it's nice and smooth.
Pour a small amount of beef drippings (about 1/2 teaspoon or so) into each cup of a standard muffin pan and place the pan in the hot oven until just before the drippings begin to smoke, a couple of minutes. Carefully remove the pan from the oven and immediately fill the muffin cups about one-half to three-quarters full with the batter. Bake until the puddings have popped about as much as they can pop, 13 to 14 minutes.