Side meat refers to the meaty part of the pig's side, which is commonly used in Southern cuisine to add flavor and seasoning to dishes. Although side meat is a specific term, there are several synonyms that can be used interchangeably. Pork belly is a popular replacement for side meat, often used in the same recipes. Other terms include streak-o'-lean, bacon, salt pork, and fatback. Streak-o'-lean is a leaner cut of pork, while fatback is a fattier option. Bacon and salt pork are salt-cured, making them different from plain side meat. Regardless of the term used, these cuts of meat are delicious additions to many meals, especially those with a Southern flair.