MOSSES The moment of truth had come for Mary Surles. Before her was a steaming saucepan containing a knotted white cloth and an amber brown liquid that had been boiling for a few minutes. Surles lowered a silver serving spoon through the steam and brought some of the liquid to her mouth. The next moment, her eyes brightened. Her left index finger pointed triumphantly toward the ceiling. The liquid that had just passed Surles' personal taste test was a homemade tea. It also was a home remedy, ready to be used, as Surles has used it countless times in her...