Nyuma yibinyejana byicyayi cyirabura cyagurishijweicyayiamabatinkibinyobwa byingenzi byicyayi muburayi, gucuruza neza icyayi kibisi byakurikiranye. Icyayi kibisi kibuza enzymatique reaction yubushyuhe bwo hejuru bwashizeho ubuziranenge bwibibabi byatsi mubisupu isobanutse.

Abantu benshi banywa icyayi kibisi kugirango bateze imbere ubuzima bwabo, bigatuma icyayi kibisi gihinduka ikinyobwa cyimiti, kubwibyo ntibishimishije cyane kandi bigomba kunozwa wongeyeho ibintu bishya. Minisiteri y’ubuhinzi y’Ubuyapani ikurikije inzira y’Ubushinwa, iteza imbere cyane icyayi cy’Abayapani cyiza cyane mu Burayi, nacyo kikaba gifite umuco gakondo, ariko gifite uburyohe butandukanye rwose n’ibisabwa byenga inzoga, bikurura abantu benshi kandi bafite ubumenyi bifuza cyane shakisha ibinyobwa bishya byabaguzi. Koreya y'Epfo yakurikijeho kandi itangira guteza imbere icyayi kibisi cyiza cyane mu Burayi, cyane cyane icyayi gikomoka ku kirwa cya Jeju mu majyepfo y’igice cya Koreya.

Icyayi cyiza-cyiza cyicyayi kibisi kiboneka kumasoko yose ya supermarket, yaba arekuye cyangwa muriimifuka y'icyayi, kimwe no gutoranya kwinshi kwicyayi kibisi kiva mubihugu byinshi nka Lipton, Tetley na Twinings. Abakora premium n'abacuruzi bato bakoresha icyayi kibisi kuva inkomoko izwi mubicuruzwa byabo. Icyayi kibisi cy'Ubuyapani kigenda gikurura kandi kizamurwa cyane mu Bufaransa, Ubudage, Ubutaliyani n'Ubwongereza.

Ku munsi wimvura, kora igikombe cyicyayi hanyuma wicare wenyine mwidirishya. Urebye imvura yoroheje hanze yidirishya ,. igikombe cy'icyayiimbere yanjye arimo guteka icyayi kibisi, nkumva ijwi ryimvura ikubita kuri latike yidirishya, umutima wanjye urimo kuzunguruka icyayi nimvura, kimwe no kureba ibibi nibibi byubuzima.