so i moved to New England in an area full of Portuguese and Azorean immigrants and came up against salt cod (bacalhau, bacalla). It takes some crazy prep (days of soaking, sometimes even in milk) and stinks up your house. I prefer fresh fish, but that's just me.
That said, it had to be on the table at Easter where I lived, and one time I made a dip with it and potatoes that was absolutely fabulous. This is not the recipe (I didn't bother whipping the potatoes, i left them chunky) but otherwise it is pretty similar, and has a great explanation of how to prep the fish.
https://www.seriouseats.com/brandade-salt-cod-spread-recipe