Tshuaj yej tsom rau kev hnov nws cov ntxhiab, pom nws cov xim, thiab saj nws saj. Lub volatilization ntawm cov tshuaj tsw qab yog tshwm sim los ntawm cov tshuaj tsw qab uas coj tawm thaum lub chav evaporates thaum lub sij hawm dej kub brewing txheej txheem; nws cov xim thiab saj yog txiav txim los ntawm tus nqi ntawm cov dej extract Vim hais tias ib co ntawm cov khoom xyaw nyob rau hauv cov tshuaj yej yog kub-soluble, xim, aroma thiab saj ntawm tshuaj yej tsuas yog yuav tsum tau sai sai paub thaum brewed nyob rau hauv dej kub.