I started the latest batch of "mixed berry" on 1-5-12. I added Montrachet on 1-6, 1.036 sg @ 74•. I racked into a secondary on 1-15, 0.990 sg @ 72•. I have tasted it and I like it the way it is but I am unsure if I add potassium sorbate and potassium metabisulphite (as I've done with kits) or...