Please see the alert below from Star-K Certification which is relevant to a balsalmic vinegar that is sold locally at 99 Cents stores that is no longer kosher even when bearing the Star-K symbol.
Please be advised that Cosmopolitan Food Group and all its brands, including Palermo, Milas, Casa di Oliva, Zayit, and Original Gourmet, has been terminated due to Kashrus violations.  Consumers are advised not to use any of these products, even when bearing a Star-K,  with the exception of unflavored olive oils.
Please post and distribute this notice.