I love that the cast quietly “yes, and-ed” themselves into it being probably canon that Caduceus made pot brownies (“a baking experiment gone horribly wrong”), and Caleb ate some of them and was super high while he worked on the equations for Nott’s spell before they all went to Essek’s.
It was maybe mostly a joke, but no one ever contradicted it because they kept “yes, and-ing” (to the point where Caduceus later apologized for “what I did yesterday, let’s never speak of it”) and so that reality is just...quietly sitting there in the nebulous realm of Probably Canon, just through the cast being silly and running with Tal’s “baking experiment” joke in response to Manic Caleb.