2     cups          cider vinegar
2/3   cup           ketchup
1/2   cup           brown sugar
1     tablespoon    Tabasco sauce
1     tablespoon    lemon juice
1     tablespoon    Worcestershire sauce
2     tablespoons   butter
1     teaspoon      red pepper flakes
1     teaspoon      dry mustard
1/2   teaspoon      salt
1/2   teaspoon      freshly-ground black pepper