The Canteen

From Muppet Wiki

The canteen was first seen in episode 301 of The Muppet Show. It was a place where the Muppet cast and crew could have meals, which were cooked by The Swedish Chef and served by Gladys.

The canteen was seen during the third and fourth seasons, but it was abandoned after the fourth season (though Kermit did mention the canteen in episode 524).

It's in the canteen where a number of characters croak from food poisoning (including the Swedish Chef) in episode 414 and where Fozzie thinks he can escape the creepiness of Alice Cooper in episode 307 with a small group of seemingly clean cut kids.

Like the prop room, the canteen space has also been occasionally used to rehearse acts: Miss Piggy and Rowlf rehearsed the "Cheek to Cheek" number there in episode 316. Scooter uses it to practice with the Prairie Dog Glee Club in episode 402, and Bobby Benson attempts to run through a number with his Baby Band there in episode 405.