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Mixed Fermentation

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Devin Bell reported getting a good level of sourness by co-pitching probiotics with ''L. plantarum'' or Omega Labs OYL-605 with yeast, or even after primary fermentation (also known colloquially as the "Reverse MTF Method"). By allowing the yeast to ferment for two or three days before adding ''Lactobacillus'' for souring, it is claimed that this method allows the yeast character to be expressed more so than with kettle sours. In the case of pitching ''L. plantarum'' after fermentation with saison yeast, Bell reported that the beer turned out like a sour saison, where as co-pitched makes for a better Berliner Weisse or Gose style beer without the "saison" yeast character. This has also improved head retention in his beers. Using no hops seems to be required in order to get acid production from the ''L. plantarum'' after primary fermentation. Devin clarified that his "best success" is pitching ''S. cerevisiae'' saison strain with a selection of ''Brettanomyces'' for primary fermentation. After 5-7 days of fermentation, he pitches ''L. plantarum'' (2 shots of GoodBelly or 1 package of Omega Labs OYL-605 for 5-6 gallons of beer) <ref>[https://www.facebook.com/groups/MilkTheFunk/permalink/1739156616112545/?comment_id=1739183316109875&reply_comment_id=1739749539386586&comment_tracking=%7B%22tn%22%3A%22R%22%7D Devin Bell. Milk The FunkFacebook group. 06/30/2017.]</ref>. Once terminal gravity is reached (1.002-1.004), he bottles right away. The bottles can be served at 8 weeks in the bottle, but start to peak at 24 weeks <ref>[https://www.facebook.com/groups/MilkTheFunk/permalink/1562696320425243/?comment_id=1562702310424644&comment_tracking=%7B%22tn%22%3A%22R0%22%7D MTF discussion with Devin Bell on "reverse MTF kettle sour. 01/26/2017.]</ref>. See also [https://www.facebook.com/groups/MilkTheFunk/permalink/1217518078276404/ this thread by Devin Bell] and [https://www.facebook.com/groups/MilkTheFunk/permalink/1728489143845959/ this thread by (Zach) Caroline Whalen Taggart].
See also:
* [https://www.facebook.com/SouthernBrewersConference/videos/881235365357984/ Devin Bell and Dan Pixley presentation at SBC 2017 on quick souring, including more details on this method.]
* [[Alternative_Bacteria_Sources#Culturing_from_Probiotics|General tips on using probiotics to make sour beer]].
==Finishing Mixed Fermentation Sour Beer==

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