
Modrinth · Minecraft mod
GRIMix
System for mixing potion effects in a new modified cauldron - the Alchemical Cauldron.
Quick answer
Which GRIMix release should I use?
GRIMix 1.0.0 targets 1.20.1, 1.20.2, 1.20.3 with Fabric. Installation on the client is optional. Installation on the dedicated server is optional. All 1 required mods have matching files.
Where it goes
Is GRIMix required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does GRIMix 1.0.0 need?
1.0.0. Change the file and its required mods may change too.
Install Fabric API first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add GRIMix without breaking your instance.
Built for GRIMix 1.0.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0.0. It targets 1.20.1, 1.20.2, 1.20.3 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fabric API first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.0.0. It opens that exact file at the source.
About this project
What does GRIMix add?
GRIMix
This mod adds a new block - the Alchemical Cauldron, which allows you to brew several potions together and get potions with multiple effects at once.

Potion brewing system with multiple effects
Heating
The Alchemical cauldron can hold up to 6 potions. If there is a heating block under the cauldron
- Fire
- Soul fire
- Campfire
- Soul сampfire
- Magma
- Lava
the cauldron will begin to heat up, with the heating speed depending on the block (lava is the fastest, soul сampfire is the slowest). As it heats up, the liquid in the cauldron will bubble louder and louder (the cauldron heats up quite quickly on lava, in about a couple of minutes). Once the cauldron is fully heated, you will hear a distinctive sound.
Cooking
Once fully heated, the cauldron can begin cooking potions. To start the process, you need an amethyst shard. After adding it, particles will appear above the liquid. You will know that the process has begun by the characteristic sounds. The cooking speed also depends on the heating block (here, on the contrary, the shower fire is the fastest, and lava is the slowest; cooking on lava will take about 5 minutes, and cooking on the shower fire will take only about 50 seconds).
Possible failures
After the cooking process is complete, you will hear a loud, heavy sound, after which you need to stir the potion with a shovel. You have about 20 seconds to stir, during which time you will hear a sound like evaporation, which will accelerate as time passes. If you do not stir the potion, you will end up with an Unpredictable potion, the properties of which you will discover for yourself.
If you remove the heat after the brewing has already begun (i.e., after you have thrown the amethyst shard into the cauldron), the brewing progress will begin to decline, and if you do not restore the heat completely in time, you will also get an Unpredictable Potion.
You will also fail if you add too many effects to the cauldron. The maximum number of effects in one potion is currently 4.
In all three cases, the same sound will be played.
Possible combinations of compounds and details
Since the cauldron has 6 slots for potions, it has the following combinations:
2 potions ---> 1 mixed potion
3 potions ---> 1 mixed potion
4 potions ---> 2 mixed potions
5 potions ---> 2 mixed potions
6 potions ---> 3 mixed potions
By the same logic, in cases of failure, Unpredictable potions will be brewed.
If you add the same potions, the specific effect will last longer, meaning you can pour 6 speed potions into the cauldron and get 3 mixed potions with a long-lasting speed effect.
It is worth noting that the effectiveness of the added time to the total duration of the effects decreases after 3 potions. This means that the time added by the fourth, fifth, and sixth potions will be less than normal.
If the effect levels are different, the result will be the level that is higher in terms of the number of potions in the cauldron.
The Alchemical cauldron can be obtained with a diamond pickaxe or higher.
You can climb into the Alchemical cauldron (just like in vanilla). If there are any potions in the cauldron, you will receive the effects of those potions. A cool (in my opinion) detail.
This detail also works for the Unpredictable Potion.
There are also 3 achievements in the mod, check them out!
Plans and ideas:
Currently, the mod does not allow you to pour the final potions (Unpredictable Potion and Mixed Potion) back into the cauldron after you have taken them out in bottles. But I will definitely fix this in future versions.
New effects for certain potion combinations.
All kinds of references.
I have tons of ideas for new effects, potions, elixirs, potion combinations, and all kinds of other changes to the vanilla potion brewing system.
I really love potions in Minecraft, so I want to add and improve a lot of things.
I hope the system isn't too complicated.
Enjoy the game!
Spoiler
I have a lot of plans and ideas for this mod, and I hope I can make them all happen.
Project description from Modrinth.
Pick your setup
GRIMix by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.6
1 loader build1.20.5
1 loader build1.20.4
1 loader build1.20.3
1 loader build1.20.2
1 loader build1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
GRIMix versions and loaders
1.0.1
GRIMix-1.0.1.jar
15 Nov 2025
1.0.0
GRIMix-1.0.0.jar
11 Oct 2025
Looking for an older file? The official Modrinth project page is in Resources.