If you like your ribs with just a simmering taste of heat, you will love these Spare Ribs with Ancho Chili BBQ Sauce. St. Louis cut pork spare ribs get a sweet, savory smoked paprika rub and a good long smoke over hickory wood until they’re meltingly tender for that unmistakable wood-fired flavor. Then, they’re brushed with ancho chili BBQ sauce to make them sweet and spicy.We made this recipe on the Rider DLX Pellet Grill using our Rib Flex Rack, but you can make it on your pellet grill or smoker.