Please stop calling Sweet Vitriol a “bottle episode.”

Yes, the episode was a one-off focusing on a single character. But that’s not what a bottle episode is.

A bottle episode is done entirely on the show’s standing sets, using only the main cast, with few to no guest stars. It’s usually done to save money that can be used for another, more ambitious episode. The “Court Martial” episode of Star Trek was a bottle episode. The “Annie lost her pen” episode of Community was a bottle episode that commented on the trope of bottle episodes. A bottle episode doesn’t go all the way to Newfoundland and have only one regular among a whole guest cast.