Pedro Teixeira, the great Portuguese merchant-adventurer, wrote a beautiful description of a coffeehouse with windows overlooking the Tigris and the ruins of old Baghdad. That was in 1604, and he's visiting the same street that I write about in the book, named after Abu Nuwas, though it wasn't called that back then.

In the Middle East, bread is so essential to everyday life that word for it in Egyptian Arabic is aish, which means life. It's always been the staple grain. But the predicament is that the Fertile Crescent, where wheat cultivation began, has now become the part of the world most dependent on imported wheat.

The irony is that Iraq actually has one of the richest and most sophisticated cuisines in the world. So many classic American or European foods - ceviche, albondigas, even the mint julep - have roots in Iraqi cuisine, which was a crossroads of Persian and Arab and Turkic traditions. The oldest written recipes in the world are from Iraq!

But how can you understand a war without any knowledge of the society where it happens? It's like trying to understand birth without knowing anything about pregnancy or conception. Or like trying to understand our current economic collapse without knowing what a derivative is.

If you look at the list of the top wheat importers for 2010, almost half of them are Middle Eastern regimes: Egypt, Algeria, Iraq, Morocco, Yemen, Saudi Arabia, Libya, and Tunisia. Egypt is the number-one importer of wheat in the entire world. Tunisia leads the entire world in per capita wheat consumption. So it's no wonder that the revolutions began with Tunisians waving baguettes in the streets and Egyptians wearing helmets made of bread.

But being an American woman married to an Arab guy - and a Muslim to boot! - put me in a different category. People would open up, and tell me things that they would never tell another journalist, no matter how persistent.

There's a long history in the Middle East of "bread intifadas," starting with 1977 in Egypt, when Anwar Sadat tried to lift bread subsidies. People rebelled and poured into Tahrir Square, shouting slogans against the government just like they did earlier this year. Sadat learned his lesson and kept bread subsidies in place, and so did a host of other Middle Eastern dictators - many of whom were propped up for years by the West, partly through subsidized American wheat.