Slices of Turbot Marinated in Tomato and Walnut Oil

• 8 medium tomatoes
• 50 ml (2 fl oz) sherry vinegar
• 85

Roughly cut up six of the tomatoes and place them in a food processor or blender along with the sherry vinegar, walnut oil, a good pinch of salt and a few turns of the pepper mill. Process this until smooth. Pass through a muslin or fine sieve to remove all skin and seeds. Check the seasoning – it ne