Nether Wart

Nether Wart (AKA Nether Stalk) is an item that was added in Update 0.12.1. It can be found growing in the Nether dimension, and is a key ingredient in Potions.

Obtaining
Nether Warts can be found growing naturally in Nether Fortresses on Soul Sand patches, and in Nether Fortress chests. It can also be found growing randomly in the Nether.

Farming
Nether Wart can be grown in both the Overworld and the Nether, and it does not require water to grow. However, it will only grow on Soul Sand. Unlike other crops, it is not affected by Bone Meal in any way.

Brewing

 * 1 Water Bottle + 1 Nether Wart => 1 Awkward Potion

Trivia

 * Nether Wart can be used to breed chickens in some versions. This may or may not be added to PE.
 * Nether Wart makes the same sounds as Stone when destroyed.