This page is a dedicated archive to threads on the MTF Facebook group that we feel stand out and are worth remembering and reviewing. Keep in mind that only group members can view these threads.
General Discussions
A general bucket of funky threads.
Funky Science Fridays
James Sites might have started Funky Science Friday, but MTF milked it (thanks, James)!
| Overview |
Thread Starter |
Date
|
| MTF looks at the science behind the claim that Star San is not efficient at killing yeast and mold with an expert on microbial cell wall ionic charges. |
Dan Pixley |
10/14/2016
|
| Sharing Dr. Roy Ventullo's experiment results comparing Samuel Aeschlimann's "Eureka" Lactobacillus starter versus traditional MRS media. Results: similar growth, however the "Eureka" media appears to be healthier for Lactobacillus for a longer period of time. |
Dan Pixley |
09/23/2016
|
| Scientific research on how thiols from hops create aromatic compounds, and how different strains/species of yeast produce them. |
James Sites |
08/12/2016
|
| Part 1 and Part 2 of a scientist discussing his findings with Brettanomyces and lactic/acetic acid production: more accurately counting pseudohyphal cells using fluorescence capability of a Cellometer, developing a better way that Titratable Acidity to measure acids using HPLC/UPLC-ELSD (TA measurements can be skewed by the presence of other acids), and an interesting observation that Brettanomyces cultures contaminated with a small cell count of S. cerevisiae responded differently to aeration. By not aerating, the Saccharomyces grew more rapidly and sugar was consumed at a faster rate, and by aerating the Saccharomyces growth was limited which allowed the Brettanomyces to out-compete it (and sugar was consumed at a slower rate). |
Brian Martyniak |
07/29/2016
|
| Culturing Brettanomyces from 8 vintage Berliner Weisse courtesy of Mike Marcus at Chorlton Brewing Company. Watch for updates. |
Richard Preiss |
07/15/2016
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| Mark Trent details his method for isolating Brettanomyces from Saccharomyces from dregs or other mixed cultures. |
Mark Trent |
07/01/2016
|
| Discussion on a new published study about Brettanomyces evolution based on genome sequencing, vacuole selection that might help Brett survive acidity, and a genetically understood reason for the lack of glycerol production in Brettanomyces. |
Richard Preiss |
06/17/2016
|
| Discussion with Lorenzo Peyer, a scientist that studies Lactobacillus flavor production in malt-based drinks; primarily discussed the possibility (or lack of) of butyric acid production by Lactobacillus. |
Dan Pixley |
05/29/2016
|
| Hydroxilation of fatty acids by Lacto and then lactonization of the HSA's by Saccharomyces to produce novel lactone esters. |
Dan Pixley |
04/29/2016
|
| New scientific data on 100% B. bruxellensis fermentations, including measurements of esters vs phenols, and differences between strains isolated from wines versus those isolated from beer. |
Richard Preiss |
04/15/2016
|
| Funky Science... Thursday? Link to a new article on Torulaspora delbruekii in beer fermentation, and discussion of the article, including questions about high acetaldehyde amounts and how dangerous that can be to health. |
Mike Lentz |
03/24/2016
|
| Sensory testing of 6 wild caught B. anomalus strains (verified via RFLP analysis of the 5.8S rDNA/ITS region). |
Mike Lentz |
01/15/2016
|
| Testing Brettanomyces ester/phenol production based on pitching rate in secondary. See Brettanomyces secondary fermentation experiment for the wiki write up. |
Lance Shaner |
12/04/2015
|
| Brettanomyces growth experiment measuring aeration and agitation. See Brettanomyces Propagation Experiment for the wiki write up. |
Mark Trent |
10/23/2015
|
| Richard isolates Brettanomyces and Pichia from an 18 year old gueuze. |
Richard Preiss |
10/23/2015
|
| Say it with me, Tetrahydropyridine. |
Dan Pixley |
10/02/2015
|
| Mark Trent's Back To The Future Machine (a custom vessel that is a boil kettle, fermenter, bottling vessel, bright tank, and sterilizer). |
Mark Trent |
09/04/2015
|
| Advice for growing Lacto on plates. |
Mark Trent |
09/04/2015
|
| Brett forms a biofilm, which makes it harder to clean. |
Mark Trent |
08/07/2015
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| Richard shows us that refrigerated storage of Brett is better than room temperature storage. See Storing Brett for more information. |
Richard Preiss |
0724/2015
|
| Lance Shaner demonstrates why full attenuation and krausen after pitching only a Lacto culture are signs of yeast contamination. |
Lance Shaner |
07/21/2015
|
Microbiology and Science
It's not Funky Science Friday, but it's still pretty geeky.
| Overview |
Thread Starter |
Date
|
| Justin Amaral reports his experience with yeasts sent to him by Dr. Matt Bochman at Wild Pitch Yeast: Hanseniaspora vineae, Wickerhamomyces anomalus, and Lachancea fermentati. Also Schizosaccharomyces Japonicus. |
Justin Amaral |
11/02/2016
|
| Discussions of the mechanisms of botulism poisoning, and how it applies to different brewing processes. |
Moby Toazwith Sandaltann |
10/24/2016
|
| Thomas Hübbe uploads his masters thesis on microbes and fermentation in traditional German Berliner Weisse to MTF, along with Q&A. |
Thomas Hübbe |
09/15/2016
|
| Commentary on the new Verstrepen/White Labs published study on the family tree of yeasts. |
Lars Marius Garshol |
09/08/2016
|
| Post 1 and Post 2 on a yeast called Lachancea thermotolerans that can produce significant lactic acid without modification. |
Richard Preiss and Devin Henry |
08/04/2016 and 08/18/2016
|
| The L. acetotolerans that contaminated Goose Island's Bourbon County brand beers, including notes from Brett Porter's MBAA presentation on the issue and microbiological information. |
Richard Sigesmund |
08/04/2016
|
| Lars Marius Garshol sends a collection of samples of Norwegian Kveik from various families to Escarpment Labs for identification, banking, and profiling. |
Richard Preiss |
06/18/2016
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| Opinions and discussions on whether fermenting Brettanomyces under pressure, in secondary after a Saccharomyces primary, and other variables play a role in what esters are produced. |
Devin Henry |
06/01/2016
|
| Technical discussion on the effects of freezing fruit and microorganisms. |
David Mast |
05/09/2016
|
| Discussion on the difficulty and possibilities of identifying Brettanomyces versus Saccharomyces based on morphology and selective media. |
Brian Martyniak |
04/30/2016
|
| Data that shows a correction factor of 0.1-0.2° Plato for 0.4-1% lactic acid solutions. |
Jeff Young |
04/28/2016
|
| Brettanomyces does not "eat everything," and Nathan Gibbon from Omega Labs shows why by comparing growth on lactose growth media for different species of Brett. |
Lance Shaner |
04/07/2016
|
| Comparing fermentation profile and microbial populations of spontaneously inoculated wort at Black Project Spontaneous & Wild Ales: one starting at 5.9 pH, and one starting at 4.0 pH. Also compared sterile flask fermentation versus barrel fermentation to see how much influence the barrels have. See also Update 1 on 03/15/2016. |
James Howat |
02/26/2016
|
| Suggestions on getting started with a equipment and procedures for a Quality Assurance/Quality Control program at a brewery. |
Stefan Wiswedel |
02/18/2016
|
| In depth biology discussion on genetic drift during repitching and when/if it always occurs with comments by Matt Humbard, Richard Preiss, and other scientists. |
Lars Marius Garshol |
02/03/2016
|
| Rarely do infections get identified; this one was identified in a lab as Penicillium. |
Julian Buck |
01/24/2016
|
| Sub-thread discussion about yeast and LAB in the guts of bees and wasps, and how to collect it from them. |
Matt Spaanem |
01/20/2016.
|
| Biology discussion on whether or not Brettanomyces attenuates further when combined with Saccharomyces, and what those mechanics might be (or not be). |
Per Buer |
01/19/2016
|
| A controlled experiment shows that WLP644 Saccharomyces "Trois" does not form a full pellicle in airlock-fitted flasks stored for 3+ months. |
Lance Shaner |
01/06/2016
|
| Suregork's cross between Conan yeast and WLP644 Saccharomyces "Trois". Fermentation trials have been promising, showing increased esters and better fermentation performance and attenuation. Kristoffer sent samples out for MTF members to try. See also the results of fermenting an IPA with this yeast by Alex Loijos. |
Kristoffer Krogerus |
11/06/2016
|
| Mark Trent and Lance Shaner explain why output from traditional yeast pitching rate calculators actually produce up to 4x the amount of cells then what they say they will produce for Brett. |
Mark Trent |
07/21/2015
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| Archive of discussions, evaluations, and confirmations of Lance Shaner's discovery that WLP644 Brettanomyces Trois was found genetically to be Saccharomyces cerevisiae. |
Dan Pixley |
06/27/2015
|
| Best plates for isolating Brett vs Sacch, and growing LAB. |
James Howat |
08/19/2015
|
| Fermentation and pellicle formation with Hanseniaspora uvarum. |
Matt Humbard |
08/14/2015
|
| Bryan of Sui Generis Blog educates about Rhodoturula. |
Nathan Gibbon |
06/26/2015
|
| There's a little more to it than just homoefermentative and heterfermentative LAB. |
Dan Pixley |
06/09/2015
|
| Bryan of Sui Generis Blog educates on the complexities and unknowns of Lactobacillus fermentation byproducts. |
Josh Newby |
05/24/2015
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| Bryan of Sui Generis Blog and Matt Humbard agree on why we taste "differences" between Pedio and Lacto driven beers. |
Amos Browne |
05/14/2015
|
| Discussion on the presence of Brett in the air versus barrels. |
Adam Boura |
04/14/2015
|
| Bitterness from Brettanomyces. |
Dan Pixley |
12/07/2015
|
| Can Brettanomyces become airborne? |
Asa Dunkerton |
07/14/2015
|
Unique Processes
These processes may or may not make good beer, but they get an A+ for creativity!
| Overview |
Thread Starter |
Date
|
| Council Brewing Co's Jeff Crane reports on spontaneously fermenting wort using apple pomace as the only inoculate. |
Jeff Crane |
09/14/2016
|
| Beer fermented with a Vietnamese culture called "Con me" which translates loosely to "mother" that usually contains LAB and Nematodes. |
Mark Trent |
07/27/2016
|
| Aging Brettanomyces beer (bottled with corks) in a cheese cave to absorb the aroma of the cheese. |
Mark Trent |
07/12/2016
|
| Positive results of MLF using O. oeni in mixed fermentation cider, as well as questions and answers with an award winning mixed fermentation cider maker. |
Tariq Ahmed |
07/11/2016
|
| Homebrewing a beer inspired by traditional brewing methods of Norwegian farmhouse ales using Voss Kveik, along with tips on how to forage for juniper (Juniperus communis). |
James Thor |
06/18/2016
|
| The effects of using sugar in Brett saisons, and how that effects mouthfeel and dryness, as well as discussions on how water chemistry and hops come into play. |
Josh Kauffman |
06/13/2016
|
| Using a spontaneous culture from Rubio tequila factory in Tequila, Mexico to ferment a blond ale with agave syrup. |
Alex Loijos |
06/11/2016
|
| DeWayne Schaaf's journey into bioprospecting and fermenting wine juice with wild caught yeast and bacteria. |
DeWayne Shaaf |
06/06/2016
|
| Hilton Meyer tracks down potter Daniel Toberer who makes amphora and provides tips to make them with photos. |
Hilton Meyer |
04/24/2016
|
| Experiences drying and storing yeast on paper or wood with references to historical preservation of Kveik yeast. Also see Kveik. |
Per Buer |
04/07/2016
|
| Q&A about species of juniper to use for Norwegian farmhouse ales, as well as other types of trees/branches. |
Mike Karnowski |
03/14/2016
|
| "Reverse MTF Souring." Devin Bell's experience with co-pitching probiotic L. plantarum with yeast, or pitching it after primary fermentation, and still getting sourness. Also demonstrates a very easy extract sour recipe/method for beginners. |
Devin Bell |
01/20/2016
|
| Sun dried wild yeast (might be Kluyveromyces?) from the Republic of Benin in West Africa used to ferment sorghum beers. |
Ingo Janssen |
01/14/2016
|
| Discussion of historic approaches to Belgian Wits - Short/no boils, very fast turnaround, etc. |
Amos Browne |
12/28/2015
|
| Continuous inoculation of wort with a developing sauerkraut culture. |
Alex Loijos |
11/29/2015
|
| 100% malted sorghum Berliner Weisse. |
Joel Piazza |
12/02/2015
|
| Runoff through a channel in a pine tree into a barrel used as a coolship. |
Michael Detar |
11/20/2015
|
| Open barrel fermentation with a house culture of English yeast and B. claussenii using top cropping techniques. |
Joel Stickrod |
10/06/2015
|
| 100% fermented B. claussenii wine from Malvasia, Petite Manseng and Viognier grapes. |
Dara Piraino |
09/12/2015
|
| Amphora discussion and personal Amphora building. |
Eccentric Beekeeper |
09/26/2015
|
| The birth of using probiotics to make sour beer on MTF by Josh Osborne and Devil Bell. |
Josh Osborne |
01/03/2015
|
Beer History and Culture
Research and thoughts on how beer was made back in the day, as well as cultural alcoholic mixed fermentation.
Brewing Philosophy Discussions
Informed, controversial, opinionated, discussions on sour and funky brewing processes and industry.
| Overview |
Thread Starter |
Date
|
| Discussing the idea of birthing a style, "Cervino", a spontaneous blend of wort of wine must. |
Levi Funk |
11/15/2016
|
| MTF'ers share their methods of building a mixed culture. |
Sean McVeigh |
08/25/2016
|
| Experiences on how different bottles of 88% lactic acid from the same manufacturer taste differently in tasting panels, and some potential explanations from chemist Mike Castagno. |
Ron Smith |
08/17/2016
|
| Example of GM yeast that glows in the dark, and discussions of GM and intellectual property of resulting microorganisms. |
Nick Moench |
07/11/2016
|
| Discussing the mechanics of gushing and what causes gushing in sour beers. |
Kyle McHerron |
06/30/2016
|
| Questions answered regarding what category to enter fruited Gose or fruited Berliner Weisse into for BJCP competitions, with advise from Gordon Strong. |
Andrew Grumke |
04/05/2016
|
| General advise and approaches to making "quick turn around" mixed fermentation sours (1-3 months). |
James Thor |
03/24/2016
|
| Questions and answers on contracting wort production from another brewery for a sour brewery. Answers from brewers, including Jeff Porn and Levi Funk. |
Rion Spurlock |
02/29/2016
|
| Discussion on how much coolships might influence Belgian Lambic versus barrels with scientific studies discussed, and insights from Pierre Tilquin and James Howat. |
Ron Smith |
01/29/2016
|
| Discussion on Jester King's new coolship, discussing supplementing spontaneously inoculated wort with pure cultures versus 100% spontaneously fermented beer with comments by James Howat, James Sites, and Garrett Crowell. |
Mark B. Fry |
01/12/2016
|
| Discussion on the new trend towards green bottles, which devolved into a discussion of saison/farmhouse beer history with Lars Garshol. See also this thread started by Jeff Porn on the recent trend of using green bottles. |
James Howat |
12/04/2015
|
| Discussion on whether or not Lambic has to be brewed in Belgium in order to be called "Lambic". |
Devin Bell |
02/06/2015
|
| Discussion of why some brewers warn against kettle souring. |
Wayne Wambles |
05/11/2015
|
| Discussion of what inspires us to brew funky/mixed fermentation beers. |
James Sites |
11/19/2015
|
| A microbiologist view on why using dregs is non-ideal. |
Tamir Danon |
10/08/2015
|
| Discussion of lactic acid production with Bryan of Sui Generis Blog and Matt Humbard, as well as why you shouldn't use WLP677 and the beginning discussions of why Lacto can't fully attenuate wort on its own. Also the source of the great Lance Shaner quote, "Agree that maths are hard." |
Lyall Anderson |
05/06/2015
|
| Warning against using plastic containers as coolships from a polymer chemist, and coolship dimension philosophies from James Howat and Kristen England (read all of the sub-replies). |
Dave Stokley |
11/12/2015
|
| Discussion on whether or not some 100% Brett fermentations that perform like Sacch fermentations actually contain cross contamination of Sacch yeast. |
Lance Shaner |
08/12/2015
|
| Discussion of the use of the term saison (read all of the sub-replies). See also this similar discussion from the Saison, Biere de Garde & Farmhouse Ale group. |
Bob Sylvester |
12/28/2015
|
See Also
Additional Articles on MTF Wiki
External Resources
References