When quizzed about memorable moments during filming, numerous cast members call out the time they spent working on a complicated scene that could only take place during "magic hour" at the end of each day. The cast had to film it in sections, over a number of days (20, if you believe Callum Turner) in order to to get the light just right. But the scene wasn't just memorable because it took a long time to film but also because it involved the cast eating croissants. A lot of croissants. Claudia Kim clearly can't get over the idea of Nagini stuffing her face with pastries but had to admit, "It was literally the best croissant I ever had."
Hear the cast talk about the scene (and much much more) in the video above, but if you've not seen the film yet, proceed with caution: during the discussion, they also reveal a little Wizarding World surprise that you may wish to wait for. You have been warned!