When salt was scarce or too expensive, medieval soldiers relied on a clever camp-craft technique to preserve fresh meat using clean, dry wood ash from their campfires. Hardwood ash is highly alkaline and naturally hygroscopic, meaning it absorbs moisture rapidly while creating an environment where bacteria and mold cannot survive. By sifting the cold ash to remove large charcoal chunks and packing fresh meat slices completely inside crates of the powder, soldiers created a sterile, oxygen-poor shield. This dry-curing process preserved the meat for weeks on the march, allowing the men to maintain their protein rations without relying on salt wagons.
© Medieval England
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