"A green mushroom that grows near trees in the forest. It's chock-full of natural energy. Cook it to release its stamina-restoration properties."
The Stamella Shroom is a type of mushroom and material found in Breath of the Wild. This mushroom will restore ½ of a heart when eaten raw, but can be increased if Link decides to cook it into a Toasty Stamella Shroom over an open flame. Stamella Shrooms can be used in a variety of Recipes, and they have an extra cooking effect of Stamina Recovery.
While it is first found throughout the Great Plateau, this mushroom can be found abundantly in the Ridgeland, Central, Dueling Peaks, and Hateno regions of Hyrule. They are found in dense quantities in the forest, just southwest of Rutile Lake, and within the Dalite Forest of Ridgeland. They are also found in dense quantities around the Batrea Lake and Bubinga Forest, both located in the Dueling Peaks region.
While they are abundant in the Overworld, Stammela Shrooms can also be purchased. Kanny, a traveling merchant found in the Tabantha Frontier, traveling between the Snowfield Stable and Serenne Stable, will sell a Stamella Shroom for 20 rupees. Natie, the Korok who runs the Spore Store in Korok Forest, will also sell a Stamella Shroom for 20 rupees.