Feebtlas cask conditioning is not a verb but a gerund Gerunds by definition are nouns and by well established precedent acceptable for article titles If we call it Cask conditioned ale it not only excludes lager but cider perry and mead which for centuries have been cask conditioned If the article is describing a brewing process than its title should use the gerund form for example brewing cooking baking frying steaming boiling and nearly all the articles under Cooking Cooking techniques