South Carolina Mustard Barbecue Sauce:

South Carolina Mustard Barbecue Sauce:

2/3 cup yellow prepared mustard

1/4 cup white sugar *

1/4 cup light brown sugar

1 cup cider vinegar

1 tablespoon ancho powder **

1 tablespoon chipotle powder **

1 tablespoon guajullo powder **

1 teaspoon black pepper

1 teaspoon white pepper

1/4 teaspoon cayenne pepper

(I add crushed red pepper and, if I want it even hotter,

I use fresh ground piquins)

4 drop tabasco sauce

(I use a Louisiana style hot sauce, and lots of it,

instead)

1/2 teaspoon soy sauce

2 tablespoon butter