Butter a baking-dish and put in the bottom of it slices of stale bread
(brown bread is better than white) which have been dipped in milk.
Then put in a layer of very thin slices of Gruyere cheese. Take two
eggs, beat them up to a froth, add salt and pepper, pour them into a
baking-dish on top of the bread and cheese, then put it in the oven
until it is browned on top. Serve hot.