This recipe comes to you courtesy of EiTB:
Cod is cooked in many different ways but there is one more remarkable than the others, "pil-pil".
Cod pil-pil" is without doubt the most popular way to cook Cod. There are several traditional fiestas where people cook cod pil-pil in crowded contests.
To cook cod this way for four, you need four pieces of cod, four cloves of garlic, virgin olive oil and four dried chili peppers.
Leave the cod to soak the previous day changing the water three times. Cook the cod in a saucepan with plenty of water until it starts boiling.
Remove the saucepan from the stove and remove the cod from the saucepan with care, drain it and place on a towel.
In an earthenware pot, fry the chopped garlic and half the chili cut in small slices in plenty of oil.
When the garlic is brown, remove and put the slices of cod in the pot, separated and with the skin side facing up.
Shake the pot constantly in circular movements over a medium heat adding a bit of the water used to cook the cod.
As the pot is shaken, the sauce will thicken to a jelly-like texture. At this point the dish is ready to serve.
Decorate the cod with the browned garlic and the unused chili.
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