Shroom Shake
From the Super Mario Wiki
A Shroom Shake is an item found in Super Paper Mario. They replenish ten HP and cure poison and are a key recipe in many foods. Given to Saffron, the Flipside chef, a Shroom Shake can become a Fried Shroom Plate. The only reason why it replaced the normal Mushroom as the basic recovery item is because Mushrooms were only found in some of the blocks, and recovered ten HP upon contact.
Shroom Shakes could be purchased at various stores or acquired upon defeating certain enemies. They could also be stolen from Mr. L or Shadoo, by having Thoreau grab a Shroom Shake whenever the opponent was about to use one in battle.
