What You Need to Know
The curing stage relies on salt (10–15 % w/w) and natural plant extracts (e.g., achiote, guava leaf) to inhibit spoilage organisms and impart color. During fermentation, lactic acid bacteria lower the pH to 4.0–4.5 and generate volatile compounds such as acetaldehyde and diacetyl, while the reduced water activity (0.85–0.88) further preserves texture and safety.
The Science
Primary Reaction
Salt diffusion and lactic acid fermentation