Boil six fresh eggs for seven minutes, then lay them in cold water for five minutes to cool them off; shell them, and put them on a plate. Hash fine half a small canful of mushrooms with two branches of parsley and one medium-sized, sound shallot. Put in a saucepan on the hot stove one ounce of good butter, and when melted add the prepared mushrooms, and let cook rather slowly for fifteen minutes, stirring it occasionally. Add half a pint of Madeira sauce (No. 103), season with a pinch of salt and a light pinch of pepper, then cook again slowly for ten minutes. Strain the whole through a fine sieve into another saucepan, and set it aside to keep warm; cut the six hard-boiled eggs into halves, remove the entire yolks, and mash them thoroughly in a bowl, adding half an ounce of good, fresh butter and half a pint of sweet cream. Season with a light pinch of salt, half a pinch of pepper, and half a teaspoonful of grated nutmeg; mix well together, and with this fill the twelve pieces of egg-white. Lay them on a lightly buttered dish, pour the sauce over, and put them in the oven for eight minutes before sending to the table.