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Articles related to Ingredient items should not be in this category. The correct category is the World of Warcraft ingredient items category. Please change the category code of such articles to [[Category:World of Warcraft ingredient items]]

Q:

Why "ingredients" and not "materials"?

A:

Because ingredients is more specific and sensible. Ingredients are used with recipes. The word "materials" is too generic and is only used because its abbreviation of "mats" is easier to type and understand than "ings" which can be confusing.