Adipocere / corpse wax:
a wax-like organic substance formed by the anaerobic bacterial hydrolysis of fat in tissue, such as body fat in corpses. … a crumbly, waxy, water-insoluble material consisting mostly of saturated fatty acids. Depending on whether it was formed from white or brown body fat, adipocere is grayish white or tan in color. … The transformation of fats into adipocere occurs best in the absence of oxygen in a cold and humid environment, such as in wet ground or mud at the bottom of a lake or a sealed casket …
Salami:
Salami are cured in warm, humid conditions to encourage growth of the bacteria involved in the fermentation process. Sugars (usually dextrose) are added as a food source for the bacteria during the curing process … Lactic acid is produced by the bacteria as a waste product, lowering the pH and coagulating and lowering the water-holding capacity of the meat. The acid produced by the bacteria makes the meat an inhospitable environment for other, pathogenic bacteria …