W. Va. Code § 60-1-5b

For the purpose of this chapter: “Mini-distillery” means an establishment where in any year no more than 50,000 gallons of alcoholic liquor is manufactured with no less than 25% of raw agricultural products being produced by the owner of the mini-distillery on the premises of that establishment, and no more than 25% of raw agricultural products originating from any source outside this state: Provided, That the maximum allotted production amounts shall not exceed the annual incremental production limitations provided for pursuant to section three-a of this article.