Southern Barbecue Sauce

1 teaspoon salt
1/4 cup brown sugar
1/2 cup prepared mustard
1/8 cup liquid smoke
1 cup tomato paste
1 tablespoon chili powder
1/2 cup sugar
3 cups stock
1/4 cup white vinegar
1/2 cup Worcestershire sauce
1/2 teaspoon red pepper flakes

Combine all and simmer 2 hours, being careful not to burn it. Stir often. Makes 1 quart.