Compatibility
Minecraft: Java Edition
1.21.1
Platforms
Supported environments
Creators
Details
Licensed MIT
Published 2 months ago
Updated last month
Changelog
Version 3.0.2
JEI & Recipe Loading Fixes
This version resolves critical issues preventing recipes from appearing in JEI and loading correctly in Minecraft 1.21.
Changes
- Fixed Recipe Visibility: Resolved an issue where standard Mekanism Elements recipes (like High Performance Adsorbents) were not showing in JEI.
- Fixed Silent Failures: Corrected the Data Pack folder structure (
recipes->recipe) which caused many files to be silently ignored by the game. - Recipe Format Update: Fixed 130+ recipe files that used the legacy
"id"key instead of the strict 1.21"item"key for input ingredients. - JEI Crash Fix: Fixed a
ClassCastExceptionin the JEI plugin integration. - Legacy Key Cleanup: Removed deprecated keys (
slurry,gas) from recipe outputs in favor of the standard"id"field.
Technical Notes
- Implemented custom
MSJEIRecipeViewerRecipeTypeto correctly bridge Mekanism and JEI types. - Standardized all recipe JSONs to use strict 1.21 codecs.
Files
Metadata
Release channel
ReleaseVersion number
3.0.2Loaders
Game versions
1.21.1Environment
Client and server, required on both
Downloads
15Publication date
February 5, 2026 at 2:01 AMPublisher

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