Post
by rootsbrew » Mon Feb 11, 2013 7:40 pm
In a word: yes. A 1.7 kg kit + 12 litres water, will make a pretty decent (though quite smalll) brew. The amount of yeast determines how quickly fermentation starts, so use the whole thing - you've got less fermentables, so you'll have less trub.
Why make a half-batch, though? It's the same effort as a full batch but you only get half the beer!
It is true, to get a better beer, use malt instead of pure sugar. In your lager case, try adding 1.5 kg extra light or wheat DME (or a mix of the two) with a 1.7kg lager kit and make the wort up to about 25 litres.
Btw, in both cases, you're still kit brewing - (AFAIK) it's only extract brewing when you're using no kits and only extract, e.g. boiling up the hops with the malt and adding a touch of irish moss just before flame-out, etc, etc. Nothing wrong with adapting a 1 can kit to suit your needs!