If you’re looking for a superfood to support your immune system health and act as an overall health tonic, shiitake mushrooms are a top choice. As a bonus, they impart a savory umami flavor to virtually any meal they touch. Shiitake mushrooms (Lentinus edodes) have been prized for their anticancer and immunomodulating properties since ancient times and are a mainstay of traditional Chinese medicine. Historically, shiitake mushrooms were harvested from mountainous regions in Asia, but today they’re the second most widely cultivated mushroom variety in the world—second only to the common button mushroom. Shiitake mushrooms are also a popular culinary-medicinal mushroom in Japan, and the word shiitake comes from the Japanese words shii, or “from a hardwood tree,” and “take,” or “mushroom.” Their rich, earthy, almost buttery flavor is packed with umami, the fifth taste that’s hard to put into words but is often described as meaty and savory. This makes them …