English summary: Much is known about Roman civilisation, yet it is often the most concrete aspects of it that we know the least. A question as trivial as "What did the Romans eat?" was not one which preoccupied most authors and even a perusal of Roman literature would likely give us an erroneous idea of Roman eating habits. Trimalchio's banquet, described in Petronius' Satyricon, is an orgy that has nothing to do with the Romans' customary meals,...