Yam breeds & varieties
6 named types — desirability tiers S (best) through F.
SDioscorea
Origin: PG, US
Genus True YamGenus UmbrellaNot Sweet PotatoStarch Diverse
SWhite Yam
Origin: NG
Cultural StapleMildMild Earthy SweetPoundable
SYellow Yam
Origin: JM
CaribbeanCaribbean ProvisionsDenseDense Crumbly Boil
ANagaimo
Origin: JP
Clean MildHigh Mucilage TororoJapanese TororoLong
AWater Yam
Origin: PG
D alata WingedLargeLarge TuberMoist
AChinese Yam
Origin: CN, JP
East AsianElongatedElongated Light SkinFood Medicine Overlap