The pronounced sodium chloride content in bacon results from the curing process, a traditional preservation method. Pork bellies are submerged in or injected with a brine solution containing salt, along with other ingredients like sugar and nitrates or nitrites. This process draws out moisture, inhibits bacterial growth, and contributes significantly to the characteristic flavor and texture. The level of salt used directly impacts the final product’s saltiness.
Historically, curing with salt was essential for extending the shelf life of meat before refrigeration was widely available. Beyond preservation, salt enhances the flavor profile, contributing to bacon’s savory taste and aroma. It also interacts with muscle proteins, altering their structure and leading to a more desirable, less chewy texture.