Preparation / Directions:
Preheat oven to 220°C. In a large saucepan boil potatoes in lightly salted water. Meanwhile, heat 1 tbsp of olive oil with the butter in a roasting pan. Dust the fillets with seasoned flour and fry on both sides until golden. Heat 3 tbsp olive oil in another roasting pan, add leeks, cook for 2 mins, then season. add fish to pan and bake for 10 mins. Whizz the herbs, 1 tbsp olive oil an mustard in a food processor and set aside. Drain potatoes and mash until light and fluffy, then pour in herb mixture and mix well. Arrange fish, leeks and herby mash on plates and serve.