"Hard cider" is a term used to describe a type of alcoholic beverage that is made from fermented apple juice. It contains alcohol and has a stronger taste compared to regular apple juice. Full definition
I used hard cider in my recipe, but feel free to use any acidic liquid of choice: white wine, beer, or apple cider vinegar will all do the trick. (organicauthority.com)
It was conducted in response to growing demand for hard cider apples in the state and nation. (sciencedaily.com)