MARTHA HALL FOOSE is executive chef of the Viking Cooking School. Born and raised in the Mississippi Delta, she attended the famed pastry school Ecole Lenotre in France. She returned to Mississippi and opened Bottletree Bakery-a Southern institution in Oxford-and later, with her husband, Mockingbird Bakery in Greenwood. She makes her home in Tchula, Mississippi, on her family's farm with her husband and their son.