History
Archaeological and genomic evidence points to West Africa as a major cradle of yam domestication, especially for African white yam (Dioscorea rotundata). These yams became a staple crop across the region, valued for their storability and ability to thrive in forest-savannah zones.
Separately, other yam species were domesticated in Southeast Asia and the Pacific, such as Dioscorea alata (water yam), which spread widely through island trade networks. Over time, yams traveled across continents via commerce and migration, becoming central to many cuisines and ceremonies.
Today, yams remain culturally significant in West Africa (including festivals celebrating the new yam harvest) and are used globally in savory dishes, stews, and baked preparations like this holiday soufflé.