Sake is essentially a rice based alcoholic beverage made from rice that is unpalatable but makes a perfect alcoholic concoction. Nigorizake or Nigori is cold unfiltered sake and is making its way to drink menus everywhere. The white cloudy appearance of unfiltered sake is unfermented rice solids floating around inside. It has a creamier and more robust flavor. It is served cold and did you know...sake served hot is typically low quality or old.