Saltpeter
Saltpeter, also known as potassium nitrate (KNO3), is a food-grade chemical used as a curing agent for meats like ham and bacon to preserve color and flavor.
Estimated value as of 2026 · Source: Artemisia Botanicals (current retail for coarse powdered saltpeter)
Fun Fact
Historically, saltpeter was mined from cave walls and used in gunpowder production, making it a key trade good in medieval commerce for both food preservation and explosives.
Price History
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