As the Persian empire and Persia no longer exist they eat nothing.
However as the country is now called Iran, a mainly Muslim country, food would have to conform with the relevant tenets of that religion.
The staple was grain - according to location, from wheat, oats, rye.
A strength of the Persian Empire was that the people were happy. A weakness of the Persian Empire was there were too high of taxes.
The Persian Empire.
The Persian Empire was not a person.
Persian Empire
The Persian Empire absorbed the Babylonian Empire.
Alexander the Great defeated the Persian empire
Land, sea and sky; and people.
The Persian Empire absorbed the Baabylonian Empire.
The successive Persian kings from Cyrus to Darius until conquered by Alexander who turned it into an empire of his own..
An empire is an empire, a war is a war.
The Persian Empire incorporated the Indus Valley.
Alexander conquered the Persian Empire.