Ingredients

1  large onion, peeled and finely chopped

2  bay leaves

1.2 litres chicken or vegetable stock

700g potatoes, peeled and finely diced

1  large leek, trimmed, sliced lengthways, then shredded

2  tbsp chopped fresh chives

150g fat-free natural fromage frais                                                                      

Method

1.           Place the onion in a large saucepan along with the bay leaves and 150ml of the stock.

Bring to the boil, cover and simmer for 5 minutes.

2.           Add the potato and all but a few shreds of the leek. Pour in the remaining stock and season lightly. Bring to the boil, cover and simmer for 25 minutes until tender.

3.           Discard the bay leaves and transfer the mixture to a food processor or blender. Blend until smooth and return to the saucepan.

4.           Blend in the fromage frais and reheat gently without boiling. Adjust the seasoning if necessary. Ladle into bowls and top with the reserved shredded leek and chopped chives.