Small mushrooms picked while still closed and egg-shaped, with a slightly crunchy bite. They go into stir-fries and soups; away from where they are grown, most are sold canned.
Straw mushrooms in oyster sauce is a classic Cantonese dish.
Tips
culture
草菇 originated in Guangdong and grows on rice straw - hence the name. They're harvested young as small egg-shaped buttons, prized in southern Chinese cooking but rarely seen in northern dishes.