Grand Marnier Peach Sauce Serves 4. 1 (12 ounce) jar peach preserves 2 tablespoons tomato paste 1/2 jalapeno, seeds and ribs removed, finely chopped 1 ounce Grand Marnier Combine preserves and tomato paste. This helps cut some of the sweetness and also gives the sauce a wonderful reddish color. Blend in the minced jalapeno and Grand Marnier, and warm the sauce over medium heat.