The following is an old-time recipe of Persoon: "Pick and clean your
fungi and cut them in two; wash and dry them well by wiping; then put
them in a stewpan with butter, or a piece of ham or bacon; place them
over a brisk fire, and when the butter is melted squeeze in a little
lemon-juice, give a few turns, and then add salt, pepper, and a little
grated nutmeg; cook slowly for an hour, pouring on at intervals small
quantities of beef gravy or jelly broth to prevent burning; when done,
thicken with yolks of eggs." The lemon-juice is omitted by many, who
consider it a positively unpalatable as well as unwholesome ingredient.