It's seems that the daily quest from Nam Ironpaw is broken you can do it as much as you want and you dont even lose the stuff to do it (wowhead link
so right now what i'm doin is having a stack whatso ever cooking material (ex : 20 raw tiger steak) buy a Empty Raw Tiger Steak Container from Merchant Ku and turn it the quest
and with the token I buying stack of another cooking material to do the same
enjoy