Cut ribs into serving-size pieces. Place spareribs with water to cover in a large stock pot. Cover and bring to a boil; reduce heat, and simmer 20 minutes. Drain and cool spareribs slightly.
Combine 2 teaspoons sugar, 2 teaspoons salt, and 2 teaspoons pepper; rub over entire surface of spareribs.
Combine remaining ingredients in a small mixing bowl; mix until well blended.
Place ribs on grill 5 inches from medium-low coals. Cook 1 hour or until desired degree of doneness, turning every 20 minutes and basting liberally with barbecue sauce.
Transfer spareribs to a serving platter, and serve with remaining barbecue sauce.