True Southeastern North Carolina Bbq Sauce - cooking recipe

Ingredients

2 cups cider vinegar
1 tablespoon peppercorn
1 teaspoon celery seed
1 teaspoon salt
1 tablespoon hot pepper flakes
1 onion, finely chopped
1 cup water

Preparation

Combine all ingredients in a large saucepan.
Bring to a boil, reduce heat and simmer slowly, uncovered for an hour.
Strain to remove peppercorns if desired.
Serve on pulled pork with coleslaw, on a plate or on a bun.