Why Does Salt Preserve Food? Salt preserves food primarily by reducing the availability of water, which inhibits the growth of bacteria, yeast, and molds. This process is known as food preservation by salt or curing. Salt draws moisture out of food through osmosis. Without sufficient moisture, harmful microorganisms cannot thrive. Salt also creates an environment that is inhospi... https://mosesexport.com/how-does-salt-preserve-food/