ArticleOpen Fermentation: Tips from the Pros Ollie Lagomarsino (Anchor), David Geary (D.L. Geary) and Steve Dresler (Sierra Nevada) open up about open fermentations.Already a member? Log InWritten by Betsy ParksYou'll Also Like Article MEMBERS ONLY Insulation for Single Vessel Brewing What’s the best way to hold a consistent mash temperature for brew-in-a-bag brewing? We put the popular Reflectix insulation to the test. Article FREE Improve Quality and Consistency To brew great beer you need to start with a good recipe, know how to evaluate your beers, and then understand the cause and effect of each ingredient and technique so you can improve the beer the next time you go to brew it.