Melt the butter in a medium saucepan over medium heat. Add the ginger, shallots, and garlic. Cook, stirring frequently, until the vegetables are soft and brown, about 5 minutes. Remove the pan from the heat and carefully add the bourbon. Return the pan to the heat and with a wooden spoon scrape up any of the browned bits that cling to the bottom. Add the cider, jelly, molasses, bay leaf, coriander seeds, peppercorns, and sage. Bring to a boil and reduce until the mixture is syrupy and yields about 1 1¿2 cups, about 1 hour.
Strain and add lemon juice, salt, and black pepper, to taste.