An item ingredient definition. It can be specified as a table with named or numbered keys, but not a mix of both.
Default: 0
Amount of this ingredient that should not be included in the item consumption statistics. Usually used together with an equal catalyst amount on the "product" of the catalyst in the recipe.
If this fluid is used in a recipe, the catalyst_amount
is calculated automatically based on the RecipePrototype::ingredients and RecipePrototype::results. See here.