16 ounces apple juice
1 cup bourbon
4 Tablespoons brown sugar
1 teaspoon kosher salt
½ teaspoon crushed red pepper
Stir together apple juice, bourbon, brown sugar, and salt in a saucepan. Bring to a boil over medium-high heat. Reduce heat to medium and simmer, stirring until mixture has thickened. Stir in red pepper.