Red Wine Roast Chicken

1 whole chicken, cut into pieces;

2 sweet potatoes, peeled, and chopped;

3 onions, peeled and cut into quarters;

6 carrots, peeled and cut lengthways;

2/3 cup red wine;

4 tbsp. tomato paste;

3 sprigs of thyme, leaves picked off;

½ tsp. dried marjoram;

¼ cup. red wine vinegar;

Sea salt and freshly ground black pepper;