Sweet and Sour Swiss Chard with Cranberries

• 900 g (2 lb) Swiss chard
• 25 g (1

This is one of my favourite preparations during Christmas when fresh cranberries are available. The cranberry vinegar can be replaced with raspberry vinegar if necessary.

Remove the stalks from the chard and cut the leaves into 5cm (2in) lengths. (To use the stalks, see Tip.) Blanch the leaves in boiling salted water for 5-8 minutes, until just ten