Mushrooms are glorious: they're nutritional powerhouses, add meaty savor to just about any dish, and are cheap and plentiful (mostly). But just when you thought you knew best how to use edible fungi (in gravies, as portobello burgers, stewed and served over pasta, just to name a few uses), you learn something new: there's a mushroom out there that tastes like maple syrup. Yep, maple syrup.