Soy, tsire-tsire na shekara-shekara wanda zai iya kaiwa tsawon mita 1,50, yayi kama da koren wake, tare da tushen da ke ɗauke da shi tubers ake kira "rhizobiums". Ana yin furanninta zuwa ƙarshen bazara (ƙananan fararen furanni). Da kara ganyen itace masu bishiyoyi an hada su uku uku, kuma kowane kwaya yana dauke da hatsi uku masu kiba, kamar dai su ne koren wake.
da tsaba na waken waken soya ya zama rawaya, kore, ko ja. Ita ce tsirar da aka fi amfani da ita a duniya azaman albarkatun ƙasa: don ƙera mai, don yin a salsa yaji, madara, tofu, gari, ƙwayoyin cuta da ake cinyewa kamar legumes, ciyarwa mahadi domin dabbobi.
La madarar waken soya Ana samu ta hanyar nika, dafawa da kuma tace waken soya. Fari ne mai launi, kuma galibi ana siyar dashi a cikin kwali ko a cikin kwalbar. Ana amfani da shi don shirya kayan kwalliya, kuma biredi. Ya wanzu a tsarin kayan zaki wanda aka yi shi da ferments kuma yana da alamun yogurt. Da madarar waken soya abin sha ne mara madara, mai wadataccen furotin, mai ƙarancin ruwan kitse da alli, kuma ba tare cholesterol