One trope I can’t help but notice in period pieces from Antiquity: if there’s ever a market or feast scene, the bread shown is always flat, unleavened, like a modern day pita or lavash or else similar to naan. Doesn’t matter if we’re in Homeric Greece, the Levant, Persia, Rome itself, etc. it’s always that same basic form of bread. Which, obviously, was and is widespread, but surely not the only thing available right? What else would I expect to find in a Roman bakery besides the ubiquitous flatbreads?
There is some discussion of risen bread in Would it have been possible for a roman citizen around 1 A.D. to obtain everything needed to make a Cheeseburger, assuming they had the knowledge of how to make one? answered by /u/toldinstone and /u/celebreth and /u/turtledonuts
More answers below.