Heat 3 tablespoons of niter kibbeh or butter in a heavy pot or Dutch oven. Add the onions and cook, covered, over low heat for 20 minutes, stirring occasionally. Add the garlic, ginger, and 1 tablespoon niter kibbeh and continue to cook for another 10 minutes, stirring occasionally. Add the berbere and the 2 remaining tablespoons of niter kibbeh and cook, covered, over low heat for another 10 minutes, stirring occasionally. Add the beef, broth, salt and bring to a boil. Reduce the heat to low, cover, and simmer for 45-60 minutes, or until the beef is tender, stirring occasionally.