What You Need to Know
The ash, rich in potassium carbonate and calcium carbonate, elevates the pH to 10–11, creating an environment hostile to bacteria and molds. During moderate heat drying (60–80 °C), moisture is reduced to below 10 %, lowering water activity to 0.6–0.7 and further suppressing spoilage. Simultaneously, soluble sugars and proteins leach into the surface, intensifying a characteristic bitter‑sweet profile.
The Science
Primary Reaction
pH elevation and moisture reduction inhibit microbial growth