Preheat Oven to 300 degrees. Season ribs with salt, pepper, and garlic powder. Wrap racks of ribs in double thickness of foil and bake for 1 1/2 hours at 300 degrees. Mix together all of the remaining ingredients in a sauce pan. Bring to a boil then simmer for 20 minutes covered. Remove from heat and cool. Take ribs out of oven and remove the foil. Put ribs in a baking dish and pour sauce over and let marinate for 8 hours or overnight in the refridgerator. When ready to cook, heat up barbeque to medium heat and take ribs out of marinade and put on barbeque. Cokk for about 20 minutes on each side basting constantly. ----