Yam Yeast Bread

Sweet potatoes in two colors grew in Peru, Central America, and the West Indies when Columbus came, tasted, and approved. One was pale yellow and the other dark orange. The Arawakan Indians called these tubers batatas and Columbus was happy to transport tuber and name back to the Old World to the eternal confusion of botanists and cooks. The Old World already knew of another exotic tuber, this one native to Asia and Africa, which was also sweet in taste, varied in color, and elephant