Episode #4.3 - S4-E3
Character mistake: On the website of the Saint Marie Heritage Society, there's an ample mention of Catherine's bar where the society gathers. However, it mentions the lovely "Catherine Duval" serving drinks - Catherine is Camille's mother, and their last name, as also present in the credits, is Bordey, not Duval. (00:20:45)
Answer: Most likely they had only tropical exotic drinks, he wanted an old fashioned English beer.