Croatian Cod and Potatoes

A vague recipe by Berislav Marusic (from his grandmother)

Put cod in cold water. Bring to a boil and boil for 5 min. Then take Cod off of the heat and let it cool in the water in which it was cooked (2-3 hrs.)

After 2 hrs: In another pan bring water to a boil and put in peeled potatoes. (About twice the amount of the cod--less than a pound of cod should do for 2 people.) Cook potatoes for 15 minutes. The pour out the water but *save* it. Add cod without the water to the potatoes. Add lots of olive oil, garlic, parsley, salt and pepper. (Grandmother's instructions: "As much as is needed.") I recommend trying. Then add some of the potato-water. Bring to a boil and then turn down the heat. Let it simmer for at least an hour, or till the water evaporates.