A woman prepare cookies made of dirt, water, salt and butter on the the roof of Fort Dimanche, once a prison where is said the late dictator Francois Duvalier tortured his enemies, in Port-au-Prince, Thursday Nov. 29 2007. Pregnant women and children have long prized the dirt as a rich source of calcium and an effective antacid, but for some in the country's most desperate quarters, where thousands buckle under rising food prices and rampant unemployment, mud has become a daily staple.