Refer to the blacklisted.yml

Both utilize material ENUMS

Blacklisting A Recipe:

By blacklisting a recipe, you ARE NOT removing the recipe from the server. By blacklisting a recipe you can stop a player from crafting this recipe result, and send a message or close their inventory if you choose to do so.

Overriding A Recipe:

By overriding a recipe, you ARE removing the recipe completely from the server. No one can craft this recipe anymore. The removal of the recipe from the server is done BEFORE the custom recipes are added to the server. By utilizing this feature you can change how you craft a VANILLA recipe.