Ma’anar ƙamus na “man shanu mai ruwan kasa” shi ne man shanu da aka dafa har sai daskararrun madarar ta yi launin ruwan kasa, tana ba shi ɗanɗano mai ɗanɗano da ƙamshi. Hanyar yin launin ruwan kasa ya haɗa da dumama shi a kan zafi kadan zuwa matsakaici har sai ruwan da ke cikin man shanu ya ƙafe, madarar madara ya yi caramelize kuma ya zama launin ruwan kasa. Ana amfani da man shanu mai launin ruwan kasa a matsayin kayan ƙanshi a cikin jita-jita irin su biredi, kayan gasa, da kayan marmari. Hakanan za'a iya amfani dashi azaman yadawa akan gasa ko kuma azaman topping don popcorn.