The ganoderma lucidum strictly a medicinal mushroom, not a culinary one, reishi is woody, hard, and bitter. Like maitake and other related mushrooms species, reishi can improve immune function and inhibit the growth of some malignant tumors. It also shows significant anti-inflammatory effects, reduces allergic responsiveness, and protects the liver. You can buy dried, ground mushrooms and use them to make tea if you don’t mind the bitterness.