- 1 tablespoon butter
- 1 cup chopped onion
- 1 tablespoon minced fresh ginger
- 1 cup brown sugar
- 1/2 cup cornstarch
- 1 tablespoon ground cinnamon
- 4 whole star anise pods
- 2 teaspoons dry mustard
- 2 teaspoons whole cloves
- salt and ground black pepper to taste
- 2 tablespoons distilled white vinegar
- 3 cups apple cider
- 2 cups raisins
- 1 cup bourbon
- 1 pound butter, cut into 1-tablespoon chunks
- Melt 1 tablespoon butter in a large saucepan over medium heat; cook and stir onion in hot butter until starting to caramelize, 8 to 10 minutes. Add ginger to onion; cook and stir until fragrant and caramelized, 2 to 5 minutes more.
- Stir brown sugar, cornstarch, cinnamon, star anise, mustard, cloves, salt, and pepper into onion mixture; cook until brown sugar and cornstarch dissolve. Slowly mix vinegar into brown sugar mixture. Add apple cider, raisins and bourbon; bring to a boil, stirring frequently, and cook until sauce is reduced by half, 15 to 25 minutes. Remove from heat.
- Whisk 1 pound butter into sauce, 1 tablespoon at a time, until butter melts and sauce is glossy and thick.