Shared by Sara Pavoncello

Historically, baccala and other salt-cured fish in Italy allowed people living far from the coast to enjoy the fish all year long. For the Jewish community, it was an opportunity to enjoy a fish they wouldn’t otherwise have access to. If a fresh fish was larger than the marble chopping block at the fish market in Rome, Jews couldn’t buy it, says Sara Pavoncello, a tour guide of the Roman Jewish Ghetto. So they learned to make the most of salt-cured fish by soaking it first and then simmering it in a flavorful tomato sauce with onions and garlic like Sara's grandmother did for Shabbat.
You’ll need to soak the baccala before beginning this recipe. Place the dried, salted cod in a bowl of water, cover and refrigerate for 24-48 hours, changing the water several times, until most of the salt is rinsed away and the fish is soft and pliable.
Read more about Sara’s family in “For Sara Pavoncello, Keeping Roman Jewish Traditions Alive Is an Honor” and try her recipes for Roman Jewish carbonara, Roman style artichokes with anchovies, and pomodori a mezzo.
When ready to use, thoroughly rinse the cod and pat dry. Remove any bones from the cod and cut into 6-8 pieces. Heat the olive oil in a large, wide saucepan over medium heat. Add the thinly sliced onions to the pan and cook, stirring occasionally, until softened and golden, 10-12 minutes.
Add the minced garlic and the black pepper to the pan, and stir until fragrant, 1-2 minutes. Add the tomato puree and the water to the pan. Stir to combine, bring to a boil, then lower the heat, simmer for 10-12 minutes.
Add the prepared cod to the pan, spooning the sauce over the cod to cover. Season to taste with more salt and pepper and cover. Let cook over medium heat for 10 minutes, until the fish is cooked through and flakes easily with a fork.
Serve hot, straight from the pan, topped with torn basil leaves.