Cauldron

A cauldron is a block that can hold water, potions, and dyed water.

Obtaining
Cauldrons can be mined using any pickaxe. If mined without a pickaxe, it will drop nothing. When a cauldron is destroyed, its contents will be lost.

Crafting
A cauldron can be crafted from iron ingots.



Natural generation
A single empty cauldron is generated in each witch hut. In Pocket Edition, the cauldron generates filled with a random potion or splash potion.

A cauldron $2/3$ full of water is generated in each igloo basement.

Cauldrons can be found in a few rooms inside a woodland mansion.

Water
A cauldron can be filled with water by a water bucket on the cauldron. Once completely filled, a cauldron can be used to fill a water bucket by an empty bucket on the cauldron; this empties the cauldron.

One level of water can be added to a cauldron by a water bottle on it. One level of water can be removed from a cauldron, filling a water bottle, by a glass bottle on it.

A cauldron will slowly fill up with water when rained upon, if starting empty or with some water.

Water can be stored in a cauldron even in the Nether.

Water in a cauldron will not absorb explosion damage, and will not damage an enderman or a blaze.

Removing Dye
A cauldron with water can wash the dye off of leather armor, and can remove the top-most pattern layer of a banner, by pressing on the cauldron with the leather armor or banner in hand. Each wash reduces the water in the cauldron by one level.

Applying Dye (Pocket Edition Only)
A cauldron can hold dyed water. Tapping the cauldron with a dye in hand will color the water, consuming the dye. Different dyes may be added to produce mixed colors. Tapping leather armor or leather horse armor on the cauldron will dye that item the color of the water, reducing the water in the cauldron by one level for each item dyed.

Attempting to add water or potion to dyed water will empty the cauldron.

Potions
A cauldron can hold potions: normal potions, splash potions and lingering potions. Tapping the cauldron with a potion in hand will fill the cauldron one level with the potion, and turn the potion in hand to a glass bottle. The cauldron can then be tapped with an empty glass bottle in hand to fill the bottle, turning it to a drinkable potion or a splash potion, reducing the potion in the cauldron by one level.

Tapping on a cauldron that has potion with a normal arrow in hand will turn the arrow into a tipped arrow with that potion effect, and reduce the potion in the cauldron by one level. 1 dose of potion can tip 16 arrows. A full cauldron can tip a full stack of arrows, resulting in 21.33 tipped arrows per potion.

Mixing potions or mixing water with potion in a cauldron will cause an explosion sound, and the cauldron will be emptied.

Extinguishing fire
A cauldron with water will extinguish entities on fire that fall into it. This includes mobs, players, items (if they land in the cauldron before burning up) and flaming arrows. Flaming arrows stuck into the side will also be extinguished. Each entity extinguished will cause the water in the cauldron to decrease by one level.

Redstone component


A cauldron can act as a power source for a redstone comparator. With a cauldron behind it (either directly, or separated by an unpowered solid block), a comparator will output a signal strength proportional to how full the cauldron is: 0 for empty, 1 for one-third full, 2 for two-thirds full, and 3 for completely full. However, if there is a block between the cauldron and comparator, the comparator will not immediately update.

Data values
A cauldron's fullness is defined by its block data. It is planned for block states to replace block data.

Block entity
In Pocket Edition, a cauldron has a block entity associated with it that holds additional data about the block. The block entity has the id name.

Trivia

 * Arrows "stick" to the water in a cauldron.
 * Sneaking over a cauldron will not prevent a player from falling in.
 * The inside of a cauldron is 0.3125 ($2/3$) blocks tall.
 * A cauldron holding water is the only way to have water in the Nether.
 * The water within does not work like water in the physical terms; the player cannot float/swim in it, and no bubble/water particles are produced.