Preheat oven to 300.
In a 2-quart oven-proof sauce pot, heat the bacon fat over low heat. Cook onions 5 minutes, stirring occasionally. Add the garlic, ginger, jalapeno and peaches. Increase the heat to medium and cook 10 minutes, stirring often. Add the tomato paste and cook for 5 minutes more. Stir in the remaining ingredients. Cover the sauce and place in the preheated oven.
Bake for 45 minutes, stirring occasionally. Remove the cover and bake for 30 more minutes.
The sauce may be made days in advance, and best when a day or two old.
Yield: 2 1/2 cups