Mushrooms a la Grecque

• 1 lb (450 g) small button mushrooms
• 3 tomatoes

All kinds of vegetables can be prepared using this method. Courgettes, artichoke hearts, leeks or cauliflower sprigs are among the nicest.

Choose small mushrooms – the tightly closed variety; the larger, open mushrooms are inclined to blacken the juice. Wipe the mushrooms and trim the stalks level with the caps. Nick the skins of the tomatoes, and place the tomatoes in a basin. Cover wi