Pomace in Jars (IMAGE) Washington State University Caption Pomace comes from a variety of fruits and vegetables used in making juices. The pomace is first dried, shown piled at left. Then the researchers grind it into fine powder, in the jars, for their experiments. Credit Scott Weybright, WSU Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.