Numerous of those nutrients are available in the ought to and skins from the grapes on their own but occasionally are supplemented by winemakers with additions including diammonium phosphate (DAP), freeze-dried micro-nutrients (such as Go-Ferm and Ferm-K) and in some cases the remnant of lifeless or extracted yeast cells http://wineblogger36522.acidblog.net/18387844/a-review-of-wine-equipment