In a large resealable plastic bag, combine the wine, oil, 2 minced garlic cloves, 1/2 teaspoon salt, 1 teaspoon thyme, 3/4 teaspoon marjoram, 1/2 teaspoon rosemary and 1/4 teaspoon pepper; add beef and lamb. Seal bag and turn to coat; refrigerate for 8 hours.
In a 5- or 6-qt. slow cooker, layer the potatoes, mushrooms, onions, cauliflower, kidney beans, green beans, carrots, and celery.
Drain meat and discard marinade; add to slow cooker. Combine the broth, parsley, sugar and remaining garlic, salt, thyme, marjoram, rosemary and pepper; pour over the top.
Cover and cook on low for 8-10 hours or until meat and vegetables are tender. Combine cornstarch and water until smooth; stir into stew. Cover and cook 30 minutes longer or until thickened. Serve with rice. Yield: 12 servings (3 quarts).