The Yeast Life Cycle with Chris White – BeerSmith Podcast #190

by Brad Smith on April 22, 2019 · 0 comments

This week Dr Chris White from White labs joins me to discuss the yeast life cycle and fermentation in beer.

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Topics in This Week’s Episode (51:39)

  • This week my guest is Dr Chris White, President and CEO of White Labs, a premiere provider of yeast for home brewers and Craft breweries. He is also the author of Yeast (Amazon link) the definitive book on beer brewing yeast.
  • We discuss some of Chris’ recent travels.
  • Chris provides his advice on yeast preparation for both dry and liquid yeasts.
  • We begin discussing the yeast life cycle starting with the lag phase which occurs immediately after pitching the yeast into wort.
  • Chris tells us why oxygen is so important for the lag phase of fermentation.
  • We talk about the next phase which is rapid growth. This is also the phase where alcohol, CO2 and most of the flavors associated with yeast are produced.
  • He explains the third stage which is the “stationary” phase where maturation and flocculation of the yeast takes place.
  • We briefly discuss off flavors as well as the importance of completing maturation before rushing to cold crash or filter your beer.
  • Chris gives his closing advice on fermentation as well as discusses some of the new projects ongoing at White labs.

Sponsors

Thanks to Chris White for appearing on the show and also to you for listening!
iTunes Announcements: I launched a new video channel for the BeerSmith podcast on iTunes, so subscribe now! At the moment it will only feature the new widescreen episodes (#75 and up). Older episodes are available on my revamped Youtube channel. Also all of my audio episodes are on iTunes now – so grab the older episodes if you missed any.

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