Step 1

Place the bacon in a 12-inch cast iron skillet over medium heat and cook, stirring occasionally, until the fat begins to render out, about 5 minutes. Add the onion and cook, stirring occasionally, until tender, 8 to 10 minutes.

Step 2

Add the tomato sauce, molasses, vinegar, mustard, Worcestershire, and pepper. Stir to combine and bring to a simmer. Add the beans and all the canning liquid and bring to a simmer. Cook, stirring occasionally, until the flavors meld and the sauce thickens, 15 to 20 minutes. Taste and season with salt as needed.