The Guinness brewery was founded in 1759 by Arthur Guinness. The Guinness brewery group were early exponents of the advancements in microbiology, and particularly yeast husbandry that took place in Europe at the end of the 19th Century. This led Guinness to establish the Watling laboratory in 1901 and subsequent St James’s Gate yeast Library. 16 Guinness yeast isolates were taken from the St James’s Gate yeast library and sequenced using next generation whole genome sequencing. Using Single Nucleotide Polymorphism (SNP) analysis, the genetic lineage of the Guinness yeast were established, with the Guinness yeast forming a monophyletic group (all descendants of a common ancestor). Previous yeast studies have attributed geographical location to domestication; using this information the Guinness yeast were placed with yeast domesticated in the United Kingdom and the United States. Within the 300+ yeast stored in the St James’s Gate yeast Library there are yeast from historical Irish Brewers. Using the same methods that established the genetic lineage of the Guinness yeast, 8 Irish brewing yeast were similarly assessed. In addition to the genotypic analysis of the Guinness and Irish yeast, the phenotype of the different yeasts were determined. In this paper we present an understanding of the Guinness and Irish yeast from a genotypic and phenotypic perspective. This analysis established that despite the different brewing attributes of these Irish yeast they all have a common genetic ancestry which is different to that of the United Kingdom yeast and the United States yeast. Consequently, we suggest that there is potential scope for an Irish brewing terroir concept based upon brewing with Irish yeast.Special Guest: Daniel Kerruish.Sponsored By:Hopsteiner: Proximity Malt: BSG: Precision Fermentation: The Lupulin Exchange: Berkeley Yeast: cytiva: ProLeiT: Links:Presentation 12 - The Guinness Yeast and Irish Brewing Terroir — WBC Connect 9.29.20World Brewing Congress 2024Upcoming Events - Master Brewers CalendarJoin Master Brewers

What is Kernza and does it belong in your next recipe?Special Guests: Alexandra Diemer , Harmonie Bettenhausen, Juan Medina Bielski, Tessa Peters, and Xiang Yin.Sponsored By:Hopsteiner: Proximity Malt: BSG: Precision Fermentation: The Lupulin Exchange: BSI: Grist: Berkeley Yeast: Chr. Hansen: Links:Kernza® Perennial Grain — District Rocky Mountain PresentationKernza.org2022 AURI Value Chain Report — Supply chain, pilot studies, and various technical spec sheets for Kernza's performance and potential product utilization.World Brewing Congress 2024Upcoming Events - Master Brewers CalendarJoin Master Brewers

This is what happens when someone reaches out to suggest a great podcast topic. Becky Rudolf had questions about centrifuge operation so we mobilized a small army of Master Brewers members to provide answers.Special Guests: Andrew Conlon, Becky Rudolf, Christopher Clausen, Louwrens Wildschut, Marco Garcia, Morgan Harry, Steven Lyerly, and Zach Kelly.Sponsored By:Hopsteiner: Proximity Malt: BSG: Precision Fermentation: The Lupulin Exchange: BSI: Grist: Berkeley Yeast: Chr. Hansen: Links:In-line carbonation and centrifuge integration — Ask The BrewmastersCentrifuge and fruit — Ask The BrewmastersPost centrifuge filtration — Ask The BrewmastersHot side centrifuging — Ask The BrewmastersInlet Turbidity vs. Centrifuge Flowrate and Outlet Turbidity — Ask The BrewmastersCentrifuge Twice — Ask The BrewmastersHigh gravity beer centrifuge problem. — Ask The BrewmastersLoss percents through centrifuge — Ask The BrewmastersWorld Brewing Congress 2024Upcoming Events - Master Brewers CalendarJoin Master Brewers

We celebrate the first decade of craft malt by catching up with a few of its pioneers and talking about what craft malt can do for beer.Special Guests: Andrea Stanley, Brent Manning, and Todd Olander.Sponsored By:Hopsteiner: Proximity Malt: BSG: Precision Fermentation: The Lupulin Exchange: BSI: Grist: Berkeley Yeast: Chr. Hansen: Links:Craft Maltsters GuildWorld Brewing Congress 2024Upcoming Events - Master Brewers CalendarJoin Master Brewers

We take a deep dive into oak barrels. You'll hear about the properties of oak, the different types, and all about the complexities of seasoning and toast.Special Guests: Amy LaHue, Andrew Wiehebrink, and Noah Steingraeber.Sponsored By:Hopsteiner: Proximity Malt: BSG: Precision Fermentation: The Lupulin Exchange: BSI: Grist: Berkeley Yeast: Chr. Hansen: Links:Oak 101: Understanding Oak — District Michigan PresentationDistrict Presentation ArchivesWorld Brewing Congress 2024Upcoming Events - Master Brewers CalendarJoin Master Brewers

Preview of the World Brewing Congress 2024, global brewery challenges, sustainability efforts, analysis methods, and brewery initiatives are discussed with anticipation for the unique event with diverse content and networking opportunities.

The podcast delves into brewing topics like dissolved oxygen impact, mash filters, and tank cooling. They discuss employee compliance for quality, security, and safety, as well as the diverse membership of Master Brewers. The episode also covers troubleshooting phenolic off-flavors, pasteurization requirements, and collaborative decision-making among hosts.

A team of Master Brewers discusses best practices for container rinsing with water in breweries. They highlight the importance of real-time data analysis, rinse water specifications, and monitoring rinse nozzles and valves. The podcast also emphasizes the significance of product safety, routine cleaning, and monitoring programs for water quality.

We thought we'd celebrate our 300th episode by giving John Bryce they day off...kind of.Special Guest: John Bryce.Sponsored By:Hopsteiner: Proximity Malt: BSG: Precision Fermentation: The Lupulin Exchange: BSI: Grist: Berkeley Yeast: Chr. Hansen: Links:Rolando Random & The Young Soul Rebels — The music!“Ich bin kein Berliner.” — John's brewing school blogMaster Brewers Podcast Working Group — Help make the podcast awesome!Upcoming Events - Master Brewers CalendarJoin Master Brewers

We take a look at spirit barrel aging techniques from the perspective of Julian Shrago at Beachwood BrewingSpecial Guest: Julian Shrago.Sponsored By:Hopsteiner: Proximity Malt: BSG: Precision Fermentation: The Lupulin Exchange: BSI: Grist: Berkeley Yeast: Chr. Hansen: Links:Spirit Barrel Aging: Processes, Procedures, and Techniques for Small-Scale Programs — 2019 MBAA Technical QuarterlyUpcoming Events - Master Brewers CalendarJoin Master Brewers