Creamy fish pie Ingredients For the Filling & Sauce: Mixed Fish: 400g white fish (cod, haddock), 400g smoked haddock or salmon, cut into chunks Prawns: 100g raw or cooked, peeled prawns Vegetables: 1 small onion (finely chopped), 250g peas, optional leeks or spinach Aromatics: 600ml milk, 2 bay leaves, handful of fresh parsley (chopped), pinch of nutmeg Sauce Base: 100g butter, 50g plain flour Seasoning: Salt, white pepper, 1 tsp mustard (optional) For the Topping: Potatoes: 1kg floury potatoes