Combine all ingredients except for chili flakes in a medium saucepan over medium heat. Bring to a boil, then turn down to low and simmer for 25 minutes or until reduced by 1/3.

Remove from heat and stir in chili flakes.

May be prepared up to 3 days in advance. Reheat or bring to room temperature to use as a glaze or serve as a sauce for your holiday ham or boneless pork loin roast.