KAL - Apple Cider Vinegar Green Apple Flavor - 60 Chewables This great tasting natural green apple flavored chewable is concentrated with a minimum 35% acidity as acetic acid. About KALInnovation is their tradition; the pursuit of quality is their passion. They believe that you cannot have a quality finished product unless you start with the finest raw materials. KAL products are manufactured according to Good Manufacturing Practices (GMPs).