Monkfish Kebabs with Aubergine and Yogurt Sauce

Chicken kebabs, well seasoned, are often delicious, but fish kebabs are my real favourite. Driving up the banks of the Bosporus beyond Istanbul there are a string of waterside restaurants and on a hot summer night they are a wonderful escape from the turmoil and dirt of the city. In one of these restaurants I had the ultimate fish kebabs. They used swordfish - which I had seen earlier in the day in Istanbul market – staggeringly arranged, fanning outwards like silver Catherine wheels. So th