Moldy Mush

The Moldy Mush is a type of mushroom rewarded to Mario in Super Mario RPG: Legend of the Seven Stars. It is an old mushroom that appears to have mold growing on it that only restores one HP to an ally. It is rewarded to Mario by either Grate Guy or Knife Guy when playing their respective games.

Trivia

 * Mushrooms, existing in real life, cannot grow mold because they are a fungus.