I’m rather amused. This particular food thread just goes to show that there are some characters on NSC who are so tightly wound they can literally get angry over coleslaw. I mean really! Could you imagine living in their households!?
I might be wrong but it looks like a mock tin to me and reusable? Who knows what our HT will find in there next time. I think this could be a good little sub-plot to the guess the dish threads.
My guess was going to be some kind of chocolate sponge desert.