There are small white circles at the root, the cap of the fungus, and the moldy part of the skin.

1. Small white circle at the root

The small white circle at the root of bamboo fungus is the inedible part. Although the small white circle is not toxic, it will have a raw and astringent flavor that makes people have no desire to eat it. It is best to remove the small white rings before cooking to avoid affecting the overall flavor.

2. The cap

The cap of dried bamboo fungus is an inedible part. If the cap is not removed when eating dried bamboo fungus, the food made will smell like laundry detergent and ruin the flavor. The cap is a part of the bamboo fungus and is located on the stalk.

It is rich in protein, vitamins and minerals. However, before consumption, the cap needs to be cleaned to remove surface dirt and impurities to ensure safe consumption.

3. Moldy skin

The part of bamboo fungus that cannot be eaten is the moldy skin. The moldy skin will affect the taste and nutrients of dried bamboo fungus, so you need to pay attention to it when you buy it.

Distribution range of bamboo fungus:

Bamboo fungus is distributed in many countries in the world, such as Japan, India, Sri Lanka, Indonesia, the Philippines, North Korea, the U.S.A., Cuba, Brazil, the U.K., France, Russia, Mexico, Australia, and East Africa. It is also widely distributed in China, Heilongjiang, Jilin, Hebei, Shaanxi, Jiangsu, Zhejiang, Anhui and Hunan.

Hubei, Jiangxi, Fujian, Sichuan, Yunnan, Guizhou, Tibet, Guangdong, Guangxi and Taiwan and other provinces and regions have collected reports of dicotyledonous fungus, but the varieties of dicotyledonous fungus around the world are not exactly the same, in which the southwestern provinces are more widely distributed, and the quality of edible varieties is also superior.

The General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) issued Announcement No. 112 of 2016, approving Changning Bamboo Fungus as a National Geographical Indication Protected Product, delineating the administrative area under the current jurisdiction of Changning County as a protected area, and implementing the protection from now on.

Reference for the above: Baidu Encyclopedia - Bamboo Fungus