Ben's fish pie

My friend Ben makes an excellent fish pie with fish his family catches on fishing trips. As it is a Friday I thought I'd be traditional and make a fish pie. This is pretty much his recipe, with erg few modifications.
I made enough for 3/4 people as dinner with the following quantities:



Ingredients
500g cod fillets or other white fish
600ml milk plus extra for mash
800g potatoes, peeled
400g spinach
2 eggs
Handful fresh parsley
Few drops fish sauce
1.5 tbsp flour
1.5 tbsp butter plus extra for Nash
Cheese, for topping
salt and pepper

Method

Poach the fish in the milk until tender. Meanwhile cook the spinach and put the potatoes on to boil. Add the eggs to the potato pan for enough time to hard boil them.

Remove the fish from the milk and place into a baking dish, breaking it into chunks in the process. Transfer the milk to a jug and add a few drops of fish sauce for seasoning.

In a pan melt the butter, then add the flour to form a roux. Add the milk and whisk continuously over a medium heat until smooth and thick. Season well and add the parsley.

Once hard boiled remove the eggs, allow to cool slightly and then peel and cut into quarters.
Mash the potatoes with butter and milk until smooth.

Pour the sauce over the fish, then arrange the eggs, the the spinach over it. Top with mashed potato. Texture the top with a fork then cover with cheese.

Bake in a preheated oven at 180C for 20 minutes or until cheese is melted and potato is crisping.