Sun Sep 01, 2013 1:36 pm
Campden does not halt fermentation, at least not right away. It sort of stuns the yeast and prevents them from reproducing, without killing them. So you need to use it in advance of when you want the fermentation to quit. It does indeed add a slight chalky sort of bitterness, but that will fade with a little age.
I still say, just throw in a little lactose. It's a lot easier and much more predictable than trying to stun yeast with Campden. That said, Campden can work and a lot of people do it for wine, mead, and cider. So...
Dave
"This is grain, which any fool can eat, but for which the Lord intended a more divine means of consumption. Let us give praise to our Maker, and glory to His bounty, by learning about... BEER!" - Friar Tuck (Robin Hood - Prince of Thieves)