Take the whites of four eggs, and beat until stiff. Then add the yolks
and one rounded tablespoon of melted butter, and a little salt and
pepper. Take a small baking-dish, butter it well, and put in the
bottom a layer or two of very thin slices of cheese, Parmesan or
Gruyere. Put into the oven for a few moments until thoroughly heated,
then pour on the whites of eggs mixed with the other ingredients, put
back in the oven, and serve when the eggs are a golden brown.