The Fermentation Bifurcation

Overview

The gang goes to a wine bar and runs into Penny’s old boyfriend, Zack. 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.

Guest Stars

Alessandra Torresani

Claire

Brian Thomas Smith

Zack Johnson