-Rinse the salt off the cod fish -Boil cod fish until tender (cod fish is very salty, you might want to throw the water out after you boil it the first time and rinse again) Its optional, I just rinse and boil one time only until tender and it just brakes easily with fork. -In large bowl thoroughly mix onions, tomatoes, eggs, potato,avocado. -Carefully mix in Cod Fish -Pour olive oil over Cod fish and toss just enough to evenly coat. -refrigerate until ready to serve.