You should be able to delete recipes you messed up, rename them, and also have the item name for a recipe come out different than the recipe name.
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err, your request already being considered (there already other who request the same)
in future, there will be feature to delete custom recipe ...
That good! I would suggest something like that.
I hope it doesn't take long. I have a big mess with my recipes
Big mess with your receipes.