With 70% of its land covered in forest, Japan is rich in various edible mushrooms. Among them, the mushroom that enjoys the largest amount of trading in Tsukiji is the shiitake. It enjoys worldwide popularity for its low calorie count and healthy properties. Shiitake, a must for Japanese cuisine, is cultivated in several ways. We visit shiitake farmers to learn their very unique farming techniques. We also explore various ways to enjoy one of shiitake's most attractive points, its rich aroma.