Toxxyc
New and loving it
Don't try to stop an active fermentation. Rather let it complete on it's own, and then use the online calculators to calculate how much K-Sorbate and K-Meta you should add. I usually let fermentation complete, and then let it sit for a while so it cleans up and drops out a bit. Then I'll cold crash, rack off the lees, and only THEN do I add Sorbate and K-Meta. Then I'll let it sit for a while so let the stuff work, and you'll see another thin layer of lees forming.
After a few days I'll often cold crash again, and then fine with gelatin and/or bentonite, and leave it for another week to clarify nicely. I'll then rack off the lees a final time, and dose again with K-Meta (free SO2 and all that, and to protect from oxidisation).
From there I'll bottle soon to benefit from the O2 protection of the free SO2 in solution. Then it can stand. I haven't had a mead go off using this process, although I'll be honest the longest my meads have stood is like 2 years or so.
After a few days I'll often cold crash again, and then fine with gelatin and/or bentonite, and leave it for another week to clarify nicely. I'll then rack off the lees a final time, and dose again with K-Meta (free SO2 and all that, and to protect from oxidisation).
From there I'll bottle soon to benefit from the O2 protection of the free SO2 in solution. Then it can stand. I haven't had a mead go off using this process, although I'll be honest the longest my meads have stood is like 2 years or so.