Ingredients
2 cups cider vinegar
1 1/3 cups water
1/2 cup + 2 tbs. ketchup
1/4 cup firmly packed brown sugar, or more to taste
5 tsp salt, or more to taste
4 tsp hot red pepper flakes
1 tsp freshly ground black pepper
1 tsp freshly ground white pepper
Preparation
Combine all ingredients in a nonreactive medium size bowl and whisk until the sugar and salt are dissolved. Taste for seasoning, adding sugar or salt as necessary; the sauce should be piquant but not quite sour.
