It is a diminutive of meat, widely used in Mexico. In other regions little meat is also used.
Diminutive of meat. We also say carnecita . In various parts of Colombia it is an affectionate and familiar way of calling someone named Encarnación, and who is also called Encarna or Encarnita.
Carnita, is a diminutive of meat, very used in the paisa region of Colombia. In other regions "carnecita" is used.