Did you know? While the use of wood ash for preservation isn't tied to a single culture, historical records and modern experiments show that rural societies in Africa and Asia, and more recently the #Amish, have preserved tomatoes using wood ash by creating a dry, alkaline environment to block air, moisture, and spoilage organisms.by layering them in clean, dry wood ash, ensuring each fruit is fully surrounded and not touching others to prevent spoilage. The alkaline nature of the ash creates a

SHPO Application Information - Historic Preservation Fund (U.S. National Park Service)