From Ole South Barbeque in Owensboro, Kentucky, this “dip” does double duty as a basting sauce and serving sauce. Makes more than you probably need, but the stuff becomes addictive.
Step 1: Place the ingredients in a large pot and simmer over medium heat, whisking from time to time, until the tomato paste and sugar are dissolved and the mixture is richly flavored, about 30 minutes.
Step 2: Lower the heat as necessary to obtain a gentle simmer.
Step 3: Use some of this mixture for basting barbecue mutton or lamb as it cooks.
Step 4: Once the lamb is ready, serve bowls of the sauce on the side for dipping.