1. Appearance: the cap of Hidatsumi mushroom is smaller, fan-shaped or round, and lighter in color, while the cap of Hiratake mushroom is larger, fan-shaped or flat, and darker in color.

2. Taste: the Hidatsumi Mushroom has a delicate and juicy taste, while the Hiratake Mushroom has a crisp and chewy texture.

3. Cooking methods: Shiitake mushrooms are suitable for stir-fry and soup cooking methods, while flat mushrooms are more suitable for stir-fry and deep-fry cooking methods.