The thrust of all this is that you are to enjoy the kind of food perfected by the chefs to the Nawabs in Northern India - the royal kitchens specialised in Dum Phukt cooking, which is a style of biryani cooked in a sealed pot. Doubtless the Nawabs wouldn't have flinched however high the price tag, but for Hatch End the prices at Rezala seem a little fierce. That said, the standard of cooking is high.