Cikakken shayi yana nufin aikin cire ingantattun abubuwan da ke cikin shayi tare da ruwa mai zafi, manufar aikin cirewa ita ce cire ingantattun abubuwan da ke cikin tsire-tsire, ba kawai don kiyaye launi, ƙanshi, dandano na musamman na shayi ba kamar yadda zai yiwu, har ma don hana yawan narkewar ingantattun abubuwan da ke haifar da abubuwan sha masu baƙin ciki.

Amfani da hanyar cirewa mai yawa, daya daga cikinsu yana amfani da cirewa mai zafi don kare kayan ƙanshi na asali da kuma narkar da ƙananan kwayoyin zafi; Cikakken biyu yana amfani da cikakken zafi mai zafi don cire abubuwan da ke cikin shayi da inganci, amma a lokaci guda, mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan mahaɗan maha Ta hanyar sarrafa cire sigogi za a iya daidaita wannan biyu rikice-rikice.

Bayan cirewa ya kamata a bayyana shayi, da manufar cire ƙarancin ruwan shayi, glue, non-polyphenolic macromolecule mahada, kauce wa samfurin a cikin shelf lokaci bayyana turbidity da ruwan sama. Hanyoyin bayyanawa suna da hanyar saukar da zafin jiki (high-speed centrifuge) da hanyar raba membrane (ultrafilter), ko amfani da hanyoyin biyu tare.