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| [http://www.themadfermentationist.com/ The Mad Fermentationist] || Michael Tonsmeire || Authority on sour brewing with extensive experimentation; author of "American Sour Beers"
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| [http://markoftheyeast.wordpress.com/ The Mark of the Yeast] || Richard Preiss || Emphasis on Brettanomyces, yeast wrangler, microscopy, and maintains a yeast bank for trading
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| [http://www.alesoftheriverwards.com/ Ale of the Riverwards] || Ed Coffey || Sour and lambic brewing, beta tester for [[The Yeast Bay]]