Sanguine Milkcap

A mushroom that grows in lightless caves and cellars. While it is completely white on the outside, its juice is blood red, giving it its name. If cut, the juice seeps out of the cut, allowing it to be harvested without picking the mushroom. If the juices are collected and dried before being ground, the remaining powder is a powerful drug called Sanguine Fizzle, which refreshes the user instantly, but causes a heavy hangover.

See: Sanguine Fizzle.