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added a photo of Lacto (OYL-605) by Stephen Little
[[File:Omega-lacto-microscope.jpg|thumb|Omega Yeast Labs OYL-605 Lactobacillus Blend; photo by [https://www.facebook.com/groups/MilkTheFunk/permalink/1096077917087088/ Stephen Little].]]
'''Lactobacillus''' (often referred to as ''Lacto'') is a genus of lactic acid bacteria (LAB) which produces acidity and sour flavors in the form of lactic acid (and sometimes acetic acid) found in lambics, Berliner Weiss, sour brown ales, and gueuze. ''Lacto'' can form a [[pellicle]]. See [[Pediococcus]], [[Brettanomyces]], [[Saccharomyces]], and [[Mixed Cultures]] charts for other commercially available cultures. See the [[Sour Worting]] and [[Mixed Fermentation]] pages for brewing techniques with ''Lactobacillus''. See the [[Alternative Bacteria Sources]] section for culturing ''Lactobacillus'' from grains, yogurt, probiotics, and other sources.