Streaking Yeast on a Plate
Yeast is everywhere, on plants, on fruit, in the air…and in beer. Streaking an agar plate is a quick and easy way to isolate yeast, to check for purity, and to re-culture yeast from sources like a bottle-conditioned beer or your own fermenter. A sterile inoculation loop is dipped into a sample of yeast and streaked over the agar surface on a plate in a pattern of decreasing cells. The last cells to rub off the loop are wide-enough apart so that they grow into isolated colonies. It’s easier than it sounds and Brew Your Own Magazine’s Technical Editor Ashton Lewis walks you through how to streak a yeast source on an agar plate to isolate colonies to possibly use in your next batch of beer.
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Agar Plates can be used to streak and isolate yeast strains for your brewing. Instead of buying these agar plates, Brew Your Own Magazine’s Technical Editor Ashton Lewis shows you how to
