Popcorn types (IMAGE) American Society of Agronomy Caption The research team observed 49 different varieties of popcorn including white popcorn, yellow popcorn, purple popcorn, and black popcorn to determine economical ways to create high-quality popcorn. Credit Maria Fernanda Maioli Usage Restrictions For use with this story only. 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.