Chilled melon soup with langoustines and basil

Method

1. To make the melon soup: place the melon chunks in a bowl. Mix together the lemon juice, lime juice and sherry vinegar. Stir in the basil leaves and pour over the melon, turning the chunks to coat them in the marinade. Cover and ideally leave overnight.

2. Cook the langoustines in a pan of boiling salted water for 2-3 minutes; drain and plunge into iced water.

3. To make the dressing: mix the sherry vinegar, olive oil, groundnut oil and basil leaves with a seasoning of salt and pepper in a bowl. Pour over the cooked langoustines.

4. Place the marinated melon in a blender or food processor and process until smooth

5. Mix together the crème fraiche and torn basil.

6. To serve: pile the langoustines in the centre of a bowl. Ladle the soup round the edge of the langoustines. Top with a spoonful of basil crème fraiche, a sprig of basil and a drizzle of olive oil.