
Thaumic-JEI-Unofficial
This is an unofficial maintenance fork of Thaumic JEI.
Screenshots

About this Mod
This is an unofficial maintenance fork of Thaumic JEI, originally created by Buuz135.
Original project: https://modrinth.com/mod/thaumic-jei
This fork keeps the original Thaumcraft recipe browsing features, including Arcane Workbench, Crucible, Infusion, aspect compound recipes, aspect source lookup, and research-aware recipe display.
Differences from the original project:
Improves aspect source cache behavior so cached data can be reused and refreshed incrementally instead of being rebuilt every startup by default.
Adds cache migration support for the original aspect cache format.
Improves research sync behavior for hiding and showing recipes based on player research progress.
Adds additional logging to make recipe registration, cache syncing, and research syncing easier to diagnose.
This project follows the original project license.
Thaumic JEI is licensed under the MIT License.
Available Versions
How to Install Thaumic-JEI-Unofficial on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.12.2).
Install Mod
Open the mod browser in the dashboard and search for "Thaumic-JEI-Unofficial". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.12.2
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Thaumic-JEI-Unofficial server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.12.2). You can switch loaders with one click in the panel.
Is Thaumic-JEI-Unofficial compatible with forge?
Thaumic-JEI-Unofficial officially supports forge for Minecraft 1.12.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Thaumic-JEI-Unofficial – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Thaumic-JEI-Unofficial consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
Rent Modded Server
Install Thaumic-JEI-Unofficial with just one click on your server.