Ominous Alchemy
Java mod listed for Minecraft 1.21–26.x. Downloads from the MC Java Mods app on Android.
⬇ Download on ModrinthOminous Alchemy
Turns the cauldron into a real brewing station. Fill it with water, heat it over fire or lava, charge it with Ominous Bottles, and toss in recipe ingredients to craft powerful multi-use flasks.
How to brew
- Right-click a cauldron with a water bucket
- Keep a fire, soul fire, campfire or lava block underneath until the water boils (6 seconds by default)
- Throw in an Ominous Bottle — up to 3 charges per cauldron
- Add the recipe ingredients (sugar, wind charges, blaze powder, echo shards and more)
- The finished flask pops out of the cauldron
Recipes
| Flask | Effects |
|---|---|
| Windwalker's Draught | Speed I + Slow Falling |
| Bulwark's Blood | Resistance I + Health Boost |
| Shadeveil Tonic | Invisibility + Night Vision |
| Emberheart Flask | Strength I + Fire Resistance + Haste |
Every recipe is configurable — ingredients, effects, durations, colors and flask charges.
Volatile reactions
Mixing incompatible ingredients is dangerous:
- Explosion pairs — a miniature wind explosion that throws entities around
- Gas pairs — a lingering toxic cloud that poisons and slows
- Summon pairs — a Corrupted Bogged claws its way out of the brew
Flasks
Flasks are multi-use potion flasks. Right-click one to spend a charge; each recipe configures how many charges it starts with.
Commands
| Command | Description |
|---|---|
/alchemy recipes |
List recipes and ingredients |
/alchemy give <player> <recipe> [uses] |
Give a flask |
/alchemy testbrew <world> <x> <y> <z> <recipeId> |
Run a brew at a cauldron |
/alchemy reload |
Reload the configuration |
Cauldron states persist across restarts. Verified on Minecraft 1.21.11, 26.2, and 26.3.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.11, 26.2, 26.3
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as Ominous Alchemy-1.0.0.jar — drop this file into the mods folder
- Download size: 28 KB
- Download link checked 23 Oct 2026 — working
These come from our own check of the pack file, not from the source page.