https://www.theguardian.com/science/2019/aug/11/ancient-menus-archaeology-modern-tastes
and
http://tavolamediterranea.com/
If Egyptian bread was in fact 'tangy and delicious', one can understand the Greeks referring to the Egyptians as 'arthophagi', 'bread-eaters', in describing their significant per capita daily bread intake. And one can understand the significant per capita daily bread intake.