Mushrooms à la Grecque

• 750 g/1 lb 10 oz very small mushrooms (the size of an average olive)
• juice of

First, clean the mushrooms if necessary - if you decide to wash them, make sure you dry them very carefully - then marinate them in the lemon juice for 10-15 minutes.

Secondly, heat some olive oil in a shallow sauté pan or a large, deep frying pan, add the onion and tomatoes and fry swiftly for a minute or two. Then add the peppercorns and coriander seeds, bay leaves, thyme, tomato puré