1. Preheat oven to 325°. Place spareribs, meaty side up, in a large shallow roasting pan. Process 1/2 cup broth and next 6 ingredients in a food processor. Combine with remaining 1 1/2 cups broth, and pour over ribs. Cover pan tightly with foil, set in lower third of oven, and bake at 325° for 2 hours 30 minutes or until meat is tender.
2. Remove ribs from pan, and pour cooking liquid into a large heavy saucepan. Add lemon juice, brown sugar, and corn syrup, and boil, uncovered, 15 minutes over high heat or until thick and syrupy. Increase oven temperature to 375°.
3. Return ribs to pan, and brush generously with glaze. Bake at 375° for 15 to 20 minutes, brushing twice more with glaze, until richly browned and glistening. Divide ribs, and serve.