Ghast Tear

Ghast Tears are items dropped by Ghasts when they are killed. Though every Ghast drops one, they are relatively difficult to obtain due to the fact that Ghast's commonly hover over lava or unreachable areas.

Use
Ghast Tears are items solely used in brewing - currently there is no other use for them. They turn an Awkward Potion into a Potion of Regeneration, or a Water Bottle into a Mundane Potion.