Hi Slugger, how'd it go? New kegs and all that.
I was abit worried that it may not have swelled in time for your Sunday brew session. Probably should have smacked it down here before I sent it up
, oh well.
Yes, you can use the pack before it swells, it's just nice to see a puffed up pack because you know your yeast is cranking along and healthy and in it's growth phase. For future reference (assuming you've brewed with it already), the idea is-as stated above-that you add the yeast into a small amount of starter so that effectively your cell count is really high. Because the yeast basically make an environment that is not really favourable to bacterial growth the sooner you can get the alc content up in the starter the better. That's why you step up starters, basically pitching generous amounts of yeast.
It's just that if you pitch straight into 3L the time taken to get to the inhibitory environment is a bit slower, thus allowing possible beasties to get established. However, if your super clean and your starting from a big wyeast pack this is less likely to happen. These big XL packs are supposed to be pitchable packs but I still recommend a starter for any brew, especially lager. Wyeast didn't always come in big packs, they used to be 50ml packs and a starter was essential. If your starting from a slant this is even more evident.
Anyway, keep it warm (ie. ale temps) and aerate as much as possible and you'll get a good strong starter.
FWIW, I'm just raising the temp on my schwarzbier for the diacetyl rest today. Also need to keg my bitter too becuase I was too lazy to do it on Sunday.
Cheers mate, hope it turns out well.
Justin
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