last year i made a batch of rasphberry grape wine and my wife liked it so much she asked me to make another batch and of course i forgot to write down the receipe i took for granted that i used welches white grape rasphberry frozen juice concentrate so, last week i went to the store and bought 9 cans never looked at the ingredients , today i looked and found out it has potassium metabisulphite in it. do you think there is anyway to use it?