What is the difference between a winemaker and a cider maker? Answer: only the fruit they use. Both are licensed as winemakers, which gives them the right to ferment fruit. Jay Kenney and Karl Kister are passionate about cider. Jay emphasizes that plain apple juice or pressed apples should never be called cider, because cider is fermented. He and Karl started Clear Fork Cider Company in Denver, Colorado in 2015.