Place the fish over a bed of salt and cover completely with salt. Set oven to 450 F and bake 25 min per 2 kg.
Fabada is one of the 3 essential Spanish dishes alongside cocido and paella. This fabada preparation is a variation from the bible of Spanish cooking from Simone Ortega, "Recetas de Cocina". Find a link to buy the book through Amazon below in English or Spanish. Ingredients are key for this dish so make sure you have all of them, specially the pig's trotter and ear. You can get these from your local butcher. For the Spanish ingredients, in the US, you can visit the link below to La Española Meats, Inc.
You need yellow potatoes, yellow onions, eggs, salt, olive oil, and salt. A saute pan, a deep pan (stockpot), and a wide plate, wider than the saute pan to turn the tortilla --this is actually the most challenging step. Depending on size of the nonstick saute pan you want to use, measure how many whole potatoes will fit in the pan. Then use about a 1:4 ratio of onions to potatoes. Set the saute pan aside. You will use this later.