Navarin of Lamb

Name: Navarin of Lamb
Ingredients: 1kg lamb neck fillet (left in one piece); 2 tablespoons extra virgin olive oil; 1 onion, quartered; 2 shallots, quartered lengthways; Crushed black pepper; 1 bay leaf; 1 sprig rosemary; 1 sprig thyme; ½ teaspoon coriander seeds; ½ teaspoon cayenne pepper; 500ml hot vegetable stock or hot water; 70g tomato puree; 400g tin of chopped plum tomatoes; 1 bulb of garlic, unpeeled and cut in half across the bulb; 10 baby new potatoes; 10 baby turnips, sliced lengthways in half; 2 teaspoons brown sugar; 3 large carrots, unpeeled and sliced lengthways in half; 1 bunch fresh parsley, chopped