Combine the first 4 ingredients. Marinate the goose for 2 to 3 hours (at a minimum) in this mixture.
Preheat oven to 325 degrees. Quarter the onion and cut celery stalk into 3 pieces. Place into cavity of goose. Sprinkle goose with salt and place into roasting pan, breast side down. Pour marinade over goose.
Cover and bake for 2 to 2-1/2 hours or until tender. Baste several times with marinade. Turn and roast, breast side up, for the last 15 minutes.