Écrevisses à la bourguignonne

• 2 carrots, finely chopped
• 2 onions, finely chopped
• 2 shallots, finely chopped

In a large saucepan gently fry the carrots, onions and shallots in 1 oz (25 g) butter. Add the wine, bouquet garni, tarragon and salt and pepper. Boil until it has reduced by a third.

Into th