Mash whiskey mai tsami wani nau'in wuski ne na Amurka wanda ake yin shi daga dusar ƙanƙara (cakuɗin hatsi da ruwa) wanda aka yarda ya yi taki ta hanyar gabatar da ɗan ƙaramin dusar da aka yi a baya, wanda aka fi sani da "backset," a ciki. sabon cakuda. Yin amfani da baya yana taimakawa wajen sarrafa matakin pH na mash, wanda ya haifar da samfurin da ya dace. Wannan dabarar ana kiranta da tsarin dusar ƙanƙara, wanda shine dalilin sunan "mai tsami mash whiskey." Ana yawan amfani da tsarin wajen samar da bourbon da wuski na Tennessee.