EASTERN NORTH CAROLINA BBQ SAUCE

1 pint cider vinegar
2 tablespoons salt
2 teaspoons ground red pepper
1 tablespoon red pepper flakes
2 tablespoons firmly packed brown sugar

Combine all ingredients and let stand several hours before using.

Adapted from source: Barbecued Ribs, Smoked Butts, and Other Great Feeds by Jeanne Voltz