Wynkoop Rocky Mountain Oyster Stout Published October 17, 2012 at 1000 × 1333 in The 2012 Great American Beer Festival Recap Yes, it contained bull testicles. No, it didn’t taste like them (I don’t think). Wynkoop Rocky Mountain Oyster Stout. Stout brewed with smoked bull testicles. Apparently bull testicles taste like licorice to me.