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Season 9: Episode 22 - The Fermentation Bifurcation
Posted on Apr 29, 2016 03:00am

The gang goes to a wine bar and runs into Penny’s old boyfriend, Zack (Brian Thomas Smith). Also, Bernadette gets stuck spending the evening with Sheldon when she can’t go wine tasting with the group, and things don’t go as planned when Koothrappali introduces his new girlfriend, Claire (Alessandra Torresani).