From the HBD Archive
From: Jason Goldman <hp-lsd!jdg>
Subject: Yeast
Date: 1989-07-26 14:52:04 GMT

Several people have asked what the difference between liquid and dry yeast.
I was under the impression that the main difference is that the liquid yeast
is a purer culture and that the dry yeast is more likely to have contam-
inants, like bacteria, molds, etc. Most of my data on this comes from an
article that was thoughtfully provided by William's (who may have had a
vested interest since they sell liquid yeast cultures ;-), so I can't say
that I have an unbiased source.

I tend to use liquid yeast for beers that are going to be fairly light, so if
there are off flavors associated with dry yeast, my beer won't suffer.
Whether I use liquid yeast or dry, I prepare a starter in advance to insure
that when I pitch, everything will start up quickly. It takes a little bit
longer for liquid yeast to take off because the amount of yeast you start with
is smaller. This is a little bit of a hassle, but hey, I'm not complaining.

Jason

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