Ghast Tears are a rare item in the game Minecraft, obtained from defeating Ghasts. These floating, ghost-like creatures inhabit the Nether and shoot explosive fireballs at players. When defeated, they drop Ghast Tears along with Ghast membranes. In the game, Ghast Tears are primarily used to brew Potion of Regeneration, which helps players recover health over time. They can also be combined with Blaze Powder to create Ender Chests, providing players with a secure storage option. Due to their rarity, collecting Ghast Tears can be a challenging but rewarding task for players exploring the Nether.