in this part of the world, whatever your background, bread is a vital, essential, fundamental and deeply respected staple. and mornings in tehran, countless bakeries like this one turn out as much as they can. oh man. smells good in here. >> babak: you have to stay in line. >> anthony: no problem. standing on line is a daily part of life for many iranians. they bake these things on small stones. gives it that, that texture. >> babak: this is why it's called sangak. sang is stone, pebble. >> anthony: in the years since the 1979 revolution, iranians have weathered wars, food shortages and crippling trade sanctions that have caused the