2  Onions , cut into 2cm dice

2  Carrots , cut into 2cm dice

2  Celery Sticks , cut into 2cm dice

1  Sprigs Fresh Thyme

1 tbsp  Sunflower Oil

1 tsp  Tomato Purée

2 tbsp  Flour

125 ml  Dry White Wine , optional

1.25 l  Vegetable Stock

2 tsp  Unilever Marmite