I have a batch of wine "muscat" from juice - since October . At the beginning fermentation was good, density came from 1.045 to 1.020 but from November I move it in basement where was cold 50F and fermentation stopped. I transfered two times and now it's in the house at 70F. It's clear but very sweet, density still 1.020 and probably 5% alcohol. What I can do ?