There are a number of fungi that are considered choice by some and toxic by others. In some cases, proper preparation can remove some or all of the toxins.
- Amanita muscaria is edible if parboiled to leach out toxins. Fresh mushrooms cause vomiting, twitching, drowsiness, and hallucinations due to the presence of muscimol. Although present in A. muscaria, Ibotenic acid is not in high enough concentration to produce any physical or psychological effects unless massive amounts are ingested.
- Coprinopsis atramentaria is edible without special preparation. However, consumption with alcohol is toxic due to the presence of coprine. Some other Coprinus spp. share this property.
- Gyromitra esculenta is eaten by some after it has been parboiled; however, mycologists do not recommend it. Raw Gyromitra are toxic due to the presence of gyromitrin, and it is not known if all of the toxin can be removed by parboiling.
- Lactarius spp. - Apart from Lactarius deliciosus which is universally considered edible, other Lactarius spp. that are considered toxic elsewhere in the world are eaten in Russia after pickling or parboiling.
- Verpa bohemica - Considered choice by some, it even can be found for sale as a "morel", but cases of toxicity have been reported. Verpas contain toxins similar to gyromitrin and similar precautions apply.
Some wild species are toxic, or at least indigestible, when raw. As a rule all wild mushroom species should be cooked thoroughly before eating. Many species can be dried and re-hydrated by pouring boiling water over the dried mushrooms and letting them steep for approximately 30 minutes. The soaking liquid can be used for cooking as well, provided that any dirt at the bottom of the container is discarded.
One recipe for Auricularia auricula-judae is to collect it while still soft, wash it thoroughly and cut it into thin slices. The prepared slices should be stewed in stock or milk for around three-quarters of an hour, and then served with plenty of pepper. The result is crispy and not unlike seaweed.
The difficult task of identifying mushrooms in the wild, for culinary or recreational purposes, can produce severe poisoning.
Cap is a widespread, gray-brown or reddish gray, mealy surface,stem of the light gray with reddish shades,has hanging ring is yellow color,growing in moist coniferous forests from summer to autumn.
Cap is bell and then widespread,gray-brown color,the edge is ribbed, is stem of gray-brown color,covered with light gray flakes,grows in deciduous forests and forest meadows in the summer and autumn.
Cap is convex then widespread,yellowish gray-brown color,covered with white color scales, stem of white color,covered with scales, has hanging ring,growing in coniferous forests in summer and autumn.
Cap convex, then widespread, fleshy, while the young mushroom surface is sticky, mucoid, and then dried purple-red, over time fading to orange color, has a basic stipe yellow color, and sprinkled with it with thick red grains, growing in mixed and deciduous forests, rare species.
Cap is widespread in wet weather mucous surface, the color varies from gray-brown to black and brown stem is fleshy, the
surface covered with prominent a reddish mesh, increasing in summer and autumn in the deciduous forests on the coast.
Cap convex, slimy in wet weather, reddish brown color, has black spots on the surface, covered with a bunch of a reddish
mesh, increasing in autumn and spring in the deciduous forests on calcareous soil.
Cap is a convex, variable color varies from yellow-brown, and orange to reddish color, the stipe in the upper half of a golden yellow color, and in the lower half of the red, growing in summer and autumn in the deciduous forests.
Cap is a convex bulging then spread and bulging,slightly concave,silk or velvet structure,gray-brown or brown ocher color, stem is fibrous and spongy,white and gray color,growing in summer and autumn in coniferous forests.
Cap is convex then spread and funnel-shaped, yellow-brown ,stem is fibrous and smooth, white color, growing in the summer and autumn in the deciduous and coniferous forests.
Cap is convex then widespread and bulging or depressed, edge is rolled, blue violet or blue gray in color, is a stem of
gray-purple in color with a tones of cream ocher color, growing in deciduous forests.
Cap is convex then spread ,fleshy, dark purple color, cap surface is a scaly structure, the stipe purple color and scaly surface growing in late summer and autumn in the coniferous forests.
Cap is bell then spread and strongly bulging, cinnamon brown ,velvet and scaly surface, the edge of the upturned and wavy,a
stipe covered with flaked brown, growing in the autumn in deciduous forests.