What is Apple Cider Vinegar? Apple Cider Vinegar (ACV) is made from Apple Juice that has undergone fermentation to form health-promoting cider giving significantly less sugar and fewer calories than Apple Juice. How to Use: Take 2 tsp (10 ml) of NatureVit Organic Apple Cider Vinegar to a glass of Lukewarm Water (250 ml). Twice a Day before Heavy Meal