Two variations are known:
- Buna-shimeji (ja:ブナシメジ), Hypsizigus tessellatus, (Brown Beech Mushroom , Beech Mushroom, BeechBrown Clamshell Mushroom);
- Bunapi-shimeji (ja:ブナピー), (White Beech Mushroom, White Clamshell Mushroom); bunapi was selected from buna-shimeji and registered by Hokto Corporation.
Hypsizygus marmoreus is a synonym of Hypsizigus tessellatus.
The Shimeji should be cooked, having a bitter taste when raw which disappears completely upon cooking. The cooked mushroom has a firm, slightly crunchy texture and a nutty flavor. Preparation makes the mushroom easier to digest. It is often eaten with stir-fried foods including wild game and seafood. It is used in soups, stews and sauces. When prepared alone, Shimeji mushrooms can be sautéed as a whole, including the stem or stalk (only the very end cut off), using a higher temperature; or, they can be slow roasted on a low temperature with a small amount of butter or cooking oil. Shimeji is used in soups, nabe and takikomi gohan.
Bunapi (Hokto Ltd. develops)