Lamb Shank Stew With Root Vegetables

Name: Lamb Shank Stew With Root Vegetables
Ingredients: Olive oil; 3 lbs of lamb shanks, each shank cut into a couple of pieces; Salt and freshly ground pepper; 6 garlic cloves, unpeeled; 2 celery ribs, coarsely chopped; 4 carrots, 2 coarsely chopped, 2 cut into 2-inch segments, and quartered lengthwise; 1 large onion, coarsely chopped; 1/2 cup tomato paste; 1 cup dry red wine; 3 cups chicken stock*; Two 1x3-inch strips of orange zest; 1 medium rutabaga, roughly chopped (1 1/2 inch pieces); 1 medium turnip, roughly sliced or chopped (1 inch pieces); 2 parsnips, chopped; 2 Tbsp chopped parsley; 2 cloves of garlic, peeled and minced; 2 teaspoons finely grated lemon zest