Bottle of Poison

The Bottle of Poison is an item that is used for crafting Poison Daggers, and it can also be drunk.

Obtaining
is a relatively rare drop from green Mirkwood spiders, Mordor Spiders and jungle scorpions. You can also obtain it by right-clicking the any of the above mobs with an empty glass bottle.

Uses
It can be used to craft poisonous daggers (this can be done on the normal Crafting Table, with a Bottle of Poison and the desired dagger type). After crafting the poisoned dagger, the glass bottle remains in the inventory and can be used again. It is also possible (though foolhardy) to drink the poison, which gives five seconds of poison effect, but doesn't fill any hunger bars.