Episode #2.3 - S2-E3
Character mistake: Richard makes it sound really special and important that the tea in the box is Camelia Sinensis...but that tells absolutely nothing, since it's simply the name of the tea plant, not a specific, precious variety of it. Your standard tea you buy at the supermarket is just as Camelia Sinensis as any other type of tea. (00:08:40)
Answer: Most likely they had only tropical exotic drinks, he wanted an old fashioned English beer.