7th.—Reject fungi which have a cobwebby veil or ring when young, and those with slimy caps and clay-colored spores.
In addition, proceed cautiously in all cases, and make it a point to become very familiar with a few species first, and gradually extend the range of species, rather than attempt the first season to eat a large number of different kinds.
All puff-balls are edible so long as they are white inside, though some are better than others. All coral-like or club fungi are edible.
To Clean and Prepare the Specimens.—The mushrooms having been collected, all tough stems, the parts to which earth clings, should be removed. After the specimens are selected, if there is danger that some of them may be infested with larvæ, it is well to cut off the stem close to the cap, for if the insects are in the stem and have not yet reached the cap they may thus be cast away. Some recommend that the tubes of all Boleti be removed, since they are apt to make a slimy mass in cooking.
Where the plants are small they may be cooked entire. Large ones should be quartered, or cut, or sliced, according to the size and form of the plant, or method of cooking.
CHAPTER XIX.
USES OF MUSHROOMS.[C]
The most prominent and at present important use of mushrooms from the standpoint of the utilitarian is as an article of food. We have now learned that their food value as a nutrient substance is not so great as has been fondly supposed, but, as Mr. Clark points out in Chapter XXII, in addition to the value they certainly do possess as food, they have very great value as condiments or food accessories, and "their value as such is beyond the computation of the chemist or physiologist. They are among the most appetizing of table delicacies, and add greatly to the palatability of many foods when cooked with them." Mushrooms undoubtedly possess a food value beyond that attributed to them by the chemist or physiologist, since it is not possible in laboratory analysis to duplicate the conditions which exist in the natural digestion and assimilation of foods.
Probably the larger number of persons, in America, at present interested in mushrooms, are chiefly concerned with them as an article of food, but a great many of these persons love to tramp to the fields and woods in quest of them just as the sportsman loves to hunt his game with dog and gun. It is quite likely that there will always be a large body of persons who will maintain a lively interest in the collection of game mushrooms for food. There are several reasons for this. The zest of the search, the pleasure of discovery, and the healthfulness of the outdoor recreation lend an appetizing flavor to the fruits of the chase not to be obtained by purchasing a few pounds of cultivated mushrooms on the market. It cultivates powers of observation, and arouses a sympathetic feeling toward nature, and with those outdoor environments of man which lend themselves so happily in bettering and brightening life, as well as in prolonging it.
Many others are discovering that the observation of form and habits of mushrooms is a very interesting occupation for those who have short periods of time at their disposal weekly. It requires but a little observation to convince one that there is an interesting variety of form among these plants, that their growth and expansion operate in conformity with certain laws which result in great variation in form and habit of the numerous kinds on the ground, on leaves, on branches, on tree trunks, etc.