4. Over high heat bring mixture to a simmer. Add salt, cayenne, and more chili powder to taste. Reduce heat to maintain a simmer and cook, partially covered, until beef is tender (about 1-1/2 hours). Check occasionally and add more broth if mixture seems dry. If chili is too thin when meat is tender, stir in up to 2 tablespoons masa harina. Cook an additional 5 minutes to thicken. Serve chili hot.