Sicilian Sweet and Sour Tuna Steaks

Follow our step-by-step guide on how to make Sicilian Sweet and Sour Tuna Steaks.

1. Step 1

   Start by heating the olive oil in a heavy-bottomed skillet over medium heat. Once the oil is shimmering, toss in the onion chunks. Sauté them gently, stirring occasionally, until they soften and turn a lovely translucent color, which should take about 5 minutes. Now, lower the heat to medium-low and continue cooking the onions, stirring frequently, until they become very tender and develop a rich, dark brown hue. This process will take around 15 to 20 minutes, so be patient; the flavor will be worth it! Once done, remove the onions from the skillet and set them aside.

2. Step 2

   In the same skillet, increase the heat to medium-high and add the tuna steaks. Sear them for about 2 minutes on each side, or until they achieve a beautiful golden brown crust. Once cooked, transfer the tuna steaks to a warm serving tray to keep them cozy while you prepare the sauce.

3. Step 3

   Now, let’s create that delicious sweet and sour sauce! In the same skillet, stir together the red wine vinegar and sugar. Keep stirring until the sugar is fully dissolved. Then, return the caramelized onions to the pan and let the mixture simmer for about 5 minutes, allowing it to reduce and thicken slightly. This will create a luscious sauce that perfectly complements the tuna.

4. Step 4

   Finally, return the seared tuna steaks to the skillet, gently coating them in the sweet and sour sauce. Cook for an additional 3 to 5 minutes, just enough to warm the tuna through without overcooking it. Once done, place the tuna back on the warm serving tray and generously top it with the onion and sweet and sour mixture. Serve immediately and enjoy the delightful flavors of Sicily!