Can I disable Mysterious Conversion in any way, or at least hide these recipes from JEI using CraftTweaker or in some other way?

This issue has been marked as stale because it has been inactive for 3 weeks. It will be closed if it remains inactive for another 3 weeks.

This issue has been closed since it has been inactive for 3 weeks since it was marked as stale.

If you don't mind me asking, for what purpose are you trying to disable the recipe? Do you just not want people to be able to use the refined radiance tools? Just curious.