Cook egg-plant fifteen minutes in boiling salted water to cover. Cut a slice from top. and with a spoon remove pulp, taking care not to work too closely to skin. Chop pulp, and add one cup soft stale bread crumbs. Melt two tablespoons butter, add one-half tablespoon finely chopped onion, and cook five minutes; or try out three slices of bacon, using bacon fat in place of butter. Add to chopped pulp and bread, season with salt and pepper, and if necessary moisten with a little stock or water; cook five minutes, cool slightly, and add one beaten egg. Refill egg-plant, cover with buttered bread crumbs, and bake twenty-five minutes in a hot oven.