Prepare either small flaps or buttons with great nicety, without wetting them, and wipe the former very dry, after the application of the salt and flannel. Stew them quite tender, with the same proportion of butter as the mushrooms au beurre, but increase a little the quantity of spice; when they are done turn them into a large dish, spread them over one end of it, and raise it two or three inches that they may be well drained from the butter. As soon as they are quite cold, press them very closely into small potting-pans; pour lukewarm clarified butter thickly over them, and store them in a cool dry place. If intended for present use, merely turn them down upon a clean shelf; but for longer keeping cover the tops first with very dry paper, and then with melted mutton-suet. We have ourselves had the mushrooms, after being simply spread upon a dish while hot, remain perfectly good in that state for seven or eight weeks: they were prepared late in the season, and the weather was consequently cool during the interval.