Yam

A large plant, with roots somewhat like the potato, grown in warm countries. The clusters of flowers are separately small, but together are showy. Most yams contain an acrid matter Yellow which is lost in cooking. The true yam is some¬ times confused with the sweet potato, which is convolvulus. liquors in the proce of fermentation; or the Yule. substance used for raising dough to be baked into bread (q. v.). Although yeast looks like a liquid to the naked eye, yet under the microscope a