What are these huge donut-like things the characters are eating in the office? From the distance it looks like cylindrical donuts, but a closer look shows it's some sort of puff roll cake. I understand that the size is greatly exaggerated, but what kind of pastry is this?
This is from the episode 9. I remember this site had an event recently where the users were proposed to watch and then discuss this episode or something like that. I wonder if this was discussed there.