Brewing is the process of creating potions and splash potions by adding various ingredients to water bottles in a brewing stand.

Potion Damage ValuesEdit

The potion damage values represent a bit field that determines the properties and display name of a potion.

Display Name

Effect Value  Bit(s)
- Determines the potion effect 0-15 0-3
Awkward Potion Allows addition of a main ingredient 16 4
Thick Potion Turns potion to level II 32 5
Mundane Potion Extends the potion duration 64 6
Mundane Potion Normal potion 8192 13
Mundane Potion Turns potion to splash 16384 14

By using a command, a potion with any of the above properties can be constructed (without the use of NBT-data).  E.g. a Speed Potion that is both extended and level II can be obtained with the command:

/give @p minecraft:potion 1 98

where the damage value 98 comes from 64 (for the extension) + 32 (for level II) + 2 (for speed).

The lowest 4 bits determine the potion effect (there can only be one).

Potion Effect Potion Value (lowest 4 bits) Effect ID
None 0 -
Regeneration 1 10
Swiftness 2 1
Fire Resistance 3 12
Poison 4 19
Health 5 6
Night Vision 6 16
Clear 7 -
Weakness 8 18
Strength 9 5
Slowness 10 2
Leaping 11 8
Harming 12 7
Water Breathing 13 13
Invisibility 14 14
Clear 15 -

Ingredients can be added to potions that meet certain requirements, when the potion damage value is changed accordingly.

  • Nether Wart: can only be added to a water bottle (potion with damage value 0). It sets bit 4 (16), which allows a main ingredient[2] to be added to the potion.
  • Glowstone: can always be added. Sets bit 5 (32) and clears bit 6 (64), which makes the potion a level II and resets the extension.
  • Redstone: can always be added. Sets bit 6 (64) and clears bit 5 (32), which makes the potion extended and resets the level to I.
  • Gunpowder: can only be added if bit 13 (8192), indicating a normal potion, is set. It sets bit 14 (16384) and clears bit 13 (8192). 
  • Main ingredients: can be added if bit 4 (16) is set. Sets the lowest 4 bits acording to its effect type and sets bit 13 (8192) to indecate a normal potion.
  • Fermented Spider Eye: can be added to most potions[check], altering the lowest 4 bits to change the effect type and sets bit 13 (8192) to indecate a normal potion.

[2] Main ingredients refers to any of: Ghast Tear, Sugar, Magma Cream, Spider Eye, Glistering Melon, Golden Carrot, Blaze Powder, Rabbit's Foot or Pufferfish.

Witch DropsEdit

Witches can drop 4 types of potions, 3 of which have unusual damage values. They are a rare drop that can only drop while the witch is drinking the corresponding potion and if killed by a player. The chance for a potion drop is increased by the Looting enchantment.

Potion Damage Value Combination
Instant Health 16341 8192+Unused+64+16+5
Speed 16274 8192+Unused+16+2
Fire Resistance 16307 8192+Unused+32+16+3
Water Breathing 8237 8192+32+13

Brewing without Nether WartEdit

The Instant Health, Speed and Fire Resistance potions that witches drop have their bit (4) 16 set, which allows a further main ingredient to be added. This makes them usable as a replacement for awkward potions. It also means that all the potion types can be brewed on maps like SkyBlock, without the need of Nether Wart. Furthermore, the Instant Health potion is extended, and the Fire Resistance potion is a level II potion. This is otherwise unobtainable without commands. These properties have no effect by themselves, however, they are kept when a new ingredient is added. E.g. an Instant Health Potion + Sugar makes an extended Speed Potion.

Automatic Brewing[1] Edit

Stacked glass bottles can be shift-clicked into a brewing stand. If the right amount of glass bottles is put into a brewing stand using this method, it is possible for comparators to detect the difference between an ingredient being in the brewing stand, and no ingredient being in the brewing stand. This makes automatic systems easier, however it has the disadvantage, that only two potions can be brewed with each ingredient, since the third slot is taken up by emtpy glass bottles.

References Edit

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