Give it a swirl and heat it up 2 degrees and it should start working again. Champagne yeast usually will go down many more points. Used 1/4 tsp of Stevia in 5 gals of cider SG = 1.000 (cider yeast from Ontariobeerkegs.com) and it tastes fine. Bulk food store item. I had one 5 gallon unit at...