It certainly is an interesting topic, & one that von Daniken mentions in 'The Eyes of the Sphinx', where he discusses the difficulty w/ provisioning the workmen w/ just 1 vegetable, namely, the onion. Why he chose that crop in particular I don't recall. But he used the sheer number of onions you would need to provide the workmen with, & the difficulty/impossibility of doing it, to extrapolate to how hard it would be to get enough food essential to the Egyptian diet, to more or less confirm that doing such would be impossible, or nearly so. Onions are 1, not essential. One could eliminate them from the diet & suffer no ill effects. 2, one needs only a very small number to meet one's wish for them. If von Daniken was right, & obtaining sufficient amounts for our onion munching friends is difficult or impossible, how much moreso foods the intake of which is essential, & in much larger amounts. Well, there you are. My work is cut out for me.