Lasagna Cod With Ready Mass or Chip Raw potato

Lasagna Cod With Ready Mass or Chip Raw potato
ingredients:
I - Option:
500 g. mass precooked industrialized lasagne or
Lasagna made in Fresh baked home.
See below the instructions.
Replacement:
You can change the mass of lasagna for batata.crua chip
500 to 800 grams. Peeled raw potatoes cut to the very thin vegetable cutter (chips).
Filling:
500 g. of cod desalted chips for 12 hours, changing the water once.
Simple White Sauce:
2 cups of cold cow milk
2 tablespoons (soup) of wheat flour
2 tablespoons (soup) of butter
other ingredients
1 can cream without serum
3 egg yolks b \ atidas

How to prepare the Bechamel Sauce:
Melt the butter add the flour, mix well, gradually add the milk gradually and slowly, until finished.
If you do not practice, do this procedure out of the fire.
Then go back to the fire to finish cooking.
Stir 3 beaten egg yolks, mix well.
Return to heat stirring constantly until cooked.
Once ready add the cream out of the fire. Reserve.
Mode Prepare the tomato sauce:
Place a large pan to heat with 3 tablespoons oil, let heat add onion, leave the fire until wilted add the cod soaked, shredded or cut into thin strips or small pieces, add the tomato sauce ready (cooked).
If you can join the sauce the fish stock is optional, set the salt, if you need to put a little more hot water.
The parsley and chives put over ready sauce before serving.
Mode Assemble the lasagna:
In a large rectangular terrine, put the ingredients in alternating layers:

In refractory bottom spread a generous layer (quite) white sauce, or cod without tomato sauce is to dry and burn in the shape
Above the sauce with a lasagna dough sheet (see below) or potato chips.
A layer of sauce with cod
Another layer of lasagne
White sauce and so on
The last layer and white sauce and mozzarella over
Sliced ​​or grated in the large drain.
If you prefer you can change the last layer the white sauce by tomato sauce with cod.
After the mountain lasagna, cover the terrine with aluminum foil
Baking mode:
Bake preheated 180 ° C for about 15 'to 20' minutes, approximately. Serve hot, that is, until the lasagna is cooked.
Leave a little in the oven "OFF" to finish cooking, and avoid burning.
Accompanying salad of fresh green vegetables or grated vegetables in the large drain: carrot, cucumber, green cabbage, red cabbage, beets.
Note:
If you can use the Industrial lasagna that comes pre cooked or dry.
Dry lasagna wetting the leaves of lasagne with cold milk, and then ride across the lasagna let stand for 30 minutes in the refrigerator.
If you can sprinkle enough chopped parsley over the ready lasagne.
I do not like to put fish stock, takes a big taste of cod.