Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      cup           apple cider vinegar
   2      tablespoons   salt
     1/2  teaspoon      red pepper
   1      teaspoon      red pepper flakes
   1      tablespoon    sugar -- (brown)

Preparation:

Combine ingredients. Let stand at least 4 hours. Four weeks is even better.