Where To Stream The Big Bang Theory Season 9 Episode 22
The Fermentation Bifurcation
- Aired April 28, 2016
- 30 Min
- Rated 7.5
- Number 143 Of 279 Rated Episodes
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.