Would you eat one of these muffins? (IMAGE) Norwegian University of Science and Technology Caption Researchers tested different formulations of muffins containing a plant extract to see which variety appealed most. Credit Screenshot from: Nutritionally Enriched Muffins from Roselle Calyx Extract Using Response Surface Methodology. Foods. 2022; 11(24):3982. https://doi.org/10.3390/foods11243982 Usage Restrictions No restrictions. License Public Domain 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.