Histories 2.77

1 Among the Egyptians themselves, those who live in the cultivated country are the most assiduous of all men at preserving the memory of the past, and none whom I have questioned are so skilled in history.

2 They practice the following way of life. For three consecutive days in every month they purge themselves, pursuing health by means of emetics and drenches; for they think that it is from the food they eat that all sicknesses come to men.

3 Even without this, the Egyptians are the healthiest of all men, next to the Libyans; the explanation of which, in my opinion, is that the climate in all seasons is the same: for change is the great cause of men's falling sick, more especially changes of seasons.

4 They eat bread, making loaves which they call “cyllestis,” of coarse grain. For wine, they use a drink made from barley, for they have no vines in their country. They eat fish either raw and sun-dried, or preserved with brine.

5 Quails and ducks and small birds are salted and eaten raw; all other kinds of birds, as well as fish (except those that the Egyptians consider sacred) are eaten roasted or boiled.