Codfish Zé do Pipo style

1. Put a pan of water on the fire and when it starts to boil, place the cod to cook just three minutes.
2. Then remove the bones and skins so that the cod is whole. Reserve.
3. Peel, wash the potatoes and cook them in a pan with water seasoned with salt. When they are cooked, pass them through the pass-vite.
4. In a pan, place the potato together with milk, margarine, nutmeg, pepper and lemon juice. Bring the pan to a low heat and stir from time to time with a wooden spoon until it begins to boil. When it starts to boil, turn off the heat. Reserve.
5. In a frying pan, place the oil, the onions cut into slices, the chopped garlic and let it cook on a low heat for about three minutes. Add the cod and fry on both sides.
6. In a glass dish place the cod with the onion on top. Pour the puree over the cod and place the mayonnaise on top.
7. Place in the preheated oven at 180ºC for about 30 to 35 minutes.
8. Remove from the oven, decorate with olives and serve.