Definition: In this task, you have to generate the title of the recipe given its required ingredients and directions.
Input: ingredients:  '1 1/2 pounds potato 11/2lb, and sweet potato, peeled and quartered', '3 tbsps semi-skimmed milk', 'black pepper', '1 3/8 ounces Flora Buttery 11/2oz, or 3 tbsps Flora Cuisine', '5 1/8 tablespoons flour 11/2oz', '425ml (3/4pint) semi-skimmed milk', '1 tablespoon fresh parsley chopped', '1/2 lemon optional', '1 pound fillets white fish, skinned and cubed', '4 ounces prawns cooked peeled', '1 leek sliced thinly and blanched in boiling water', '9/16 cup sweetcorn kernals',<sep> directions: 'Preheat oven to 200°C, 180°C fan oven, gas mark 6.', 'Boil potatoes in large pan for about 15 minutes or until cooked.', 'Meanwhile for the sauce, place the Flora, flour and milk in a saucepan. Stirring constantly, bring to the boil over a moderate heat until thickened and smooth. Add parsley, pepper and lemon zest if using.', 'Arrange fish, prawns, leek and sweetcorn in a greased ovenproof dish and pour over sauce.', 'Drain potatoes and mash until there are no lumps. Beat in milk and season. Spoon over fish and smooth top. Bake for 45 minutes until cooked through.'

Fish And Leek Pie