This is a great dish for a balmy summer night, combining a cold, creamy salad with hot fish in a crisp batter. The dish is fresh and light, but totally satisfying. It goes very well with boiled potatoes.
Reserving 25g/1oz/¼ cup of the flour, put the rest in a bowl and season with salt and pepper. Add the milk and eggs and beat together until you have a smooth batter. Set aside to rest.
To make the salad, salt the sliced cucumber and leave it to stand for 20 minutes to draw out the water. Drain in a sieve (strainer), then place in a serving bowl. Mix the sour cr