1. Bring broth, bay leaves and oregano to a boil. Reduce heat to a simmer.

2. Meanwhile, melt the butter in a nonstick skillet over medium-high heat. Add the onions, celery, green pepper, garlic, Beef Rub, mustard, salt, white and black pepper, and cayenne. Cook until browned, about 5 to 7 minutes, then add to broth along with the lemon zest, juice, soy sauce, vinegar and the oils. Stir to combine.

3. Cook the bacon in a nonstick skillet until soft. Add the bacon and any rendered fat to the broth mixture. Continue simmering until the broth is reduced by a fourth, about 45 minutes to an hour. Adjust the seasonings and baste.