Gratin of Jerusalem Artichokes

• 500 g (1 lb) Jerusalem artichokes
• salt and freshly ground white pepper
• 200<

Preheat the oven to 180°C/350°F/gas mark 4. Scrub the vegetables well, and cut off any bruised or knobbly bits. Slice them, and drop into a large pan of boiling water. Simmer for 2 to 3 minutes and then drain.

Butter an ovenproof dish, and put in a layer of artichokes. Season l