Cider is an alcoholic beverage made from fermented apple juice. To make cider, apples are first pressed to extract their juice. Natural yeasts on the apples' skins then ferment the sugars in the juice into alcohol. Beyond these basic steps, there are many variations in cider production around the world. https://www.zupyak.com/p/4486648/t/cider-the-history-and-varieties-of-this-fermented-apple-beverage