ArticleCollaborative FermentationsBy pitching two different yeast strains it is possible to play to the strengths of both strains.Already a member? Log InWritten by Michael TonsmeireIssue: March-April 2015You'll Also Like Article FREE The Impact of Fermentation on Aroma By pitching two different yeast strains it is possible to play to the strengths of both strains. Already a member? Log In Article FREE Fermenter Choices As a homebrewer, the selection of different fermenters is pretty astounding. Make sure you choose wisely.