Africa (IMAGE) American Society of Agronomy Caption Yam beans were found to have as much as three to five times more protein than potatoes or yams, and storage roots can be processed into 'yam bean gari.' This is similar to the current staple of West Africa, 'cassava gari,' a granular flour. Credit Wolfgang Gruneberg 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.