Note that both [CraftTweaker](https://minecraft.curseforge.com/projects/crafttweaker) and [MTLib](https://minecraft.curseforge.com/projects/mtlib) are required for this compatibility.
-`aura` is the amount of Aura required and represents the total amount required for the completion of the recipe (for reference, 1,000,000 is the default amount of Aura present in the world and 2,000,000 is the amount that is required for the Environmental Eye's bar to fill up fully)
When replacing an existing recipe with a new one, the `name` variable of the recipe matters greatly, both for Nature's Aura's custom recipe types and for [vanilla crafting recipes](https://crafttweaker.readthedocs.io/en/latest/#Vanilla/Recipes/Crafting/Recipes_Crafting_Table/), if the replacement recipe should be displayed correctly in the Book of Natural Aura in place of the original recipe.
__The replacement recipe that is added for any given item inside of Nature's Aura needs to be named after the item id of the item that is being crafted.__
As an example, the following piece of code will remove the existing recipe of the Imperceptible Builder and replace it with a new one. Checking its Book of Natural Aura entry will then also display the new recipe correctly without errors.
Note that the name of the recipe is supplied as `placer` because the item id of the Imperceptible Builder is `naturesaura:placer`. Not doing this would lead to the Book of Natural Aura not displaying the new recipe.
_When adding a new recipe without replacing an existing one, the name of the newly added recipe does not matter._