Beer Bitterness and IBUs with Glenn Tinseth – BSHB Podcast 9

by Brad Smith on February 10, 2011 · 8 comments

Dr Glenn Tinseth, the author of the Tinseth equation for estimating bitterness is my guest this week. The Tinseth equation is the most widely used equation for estimating bitterness by brewers from around the world. Glenn talks about hops, bitterness, international bitterness units, hop utilization and much more.

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Topics in This Week’s Episode (36:35)

  • This week my guest is Dr Glenn Tinseth ( the author of the Tinseth equation for hop utilization
  • I mention I’ll be attending the National Homebrewers Conference in June
  • We talk about Glenn’s introduction to brewing, and his research into hops
  • International Bitterness Units (IBUs) and his research into hop utilization
  • Hop flavor compounds
  • His thoughts on recent research that utilization may be independent of wort gravity
  • IBU measurement vs the perception of bitterness
  • Why brewers tend to be focused on numbers
  • How engineers shaped the early focus of brewers as the hobby evolved during the mid 1990’s
  • Aromatic hop compounds and what they do for beer
  • Glenn’s summer job at Mad River Brewing

Thanks again to Glenn Tinseth for agreeing to do the interview!

Thoughts on the Podcast?

Leave me a comment below or visit our discussion forum to leave a comment in the podcast section there.

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{ 3 comments… read them below or add one }

David February 15, 2011 at 6:17 am

Another great episode. I learn so much with each one you post. So interesting that IBU’s is technically only the absorbance of a wavelength of light times a constant and how that does end up correlating to hop bitterness. I always thought it was a more finite measurement of the actual hops bitterness! Thanks for keeping up with such great podcasts, great stuff!


Brad Smith February 15, 2011 at 9:35 am

I’m glad you are enjoying the podcasts – I’m enjoying it so far myself as I get to meet many of the people I’ve corresponded with over the years.


Steve February 18, 2011 at 7:31 pm

These podcasts are so good, really helpful, although I can tell they are aimed at more of the advanced brewers. For anyone who is new to brewing, or is just starting out, here is a site that I have recommended to some friends who are just starting:

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