Envirorot

This simple mod is a fork of enviromine that implements the food rotting system, without any of the other features of enviromine. These features are actually removed and not just disabled, making the mod very lightweight.

Permission to use:

"All source code is available here under the CC BY-NC-SA 4.0 license. If you wish to update it or make any part of it into its own mod, feel free, but it will not receive any more official updates."

https://www.curseforge.com/minecraft/mc-mods/enviromine