Venetian Sweet and Sour Marinated Sardines

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A hallmark of Venetian cicchetti culture, this classic dish layers crispy fried sardines under a slow-cooked onion agrodolce studded with pine nuts and raisins. The flavors deepen with a long rest, making it an ideal make-ahead starter or light meal served with rustic bread.

Nutrition Facts

Per serving (estimated)

• 485 kcalCalories
• 28 gFat
• 5 gSaturated Fat
• 26 gCarbs
• 3 gFiber
• 14 gSugar
• 27 gProtein
• 540 mgSodium
• 720 mgPotassium
• 165 mgCalcium
• 3.5 mgIron
• 9 mgVitamin C
• 55 mcgVitamin A

Ingredients

For the sardines

• 1.5 lb fresh sardines (about 16 medium), cleaned and butterflied
• 1/2 cup all-purpose flour
• 1 tsp fine sea salt
• 1/2 tsp freshly ground black pepper
• About 1 cup mild olive oil, for frying

For the sweet-sour marinade

• 2 large yellow onions (about 1 lb), halved and thinly sliced
• 1/3 cup extra-virgin olive oil
• 1 cup dry white wine vinegar
• 1/2 cup dry white wine
• 1/4 cup golden raisins
• 3 tbsp granulated sugar
• 2 bay leaves
• 3 tbsp pine nuts, lightly toasted
• 1/4 tsp ground cinnamon
• 1 tsp flaky sea salt

Directions

1. Rinse the butterflied sardines under cold water and pat very dry with paper towels. Season both sides with the fine sea salt and pepper, then dredge lightly in flour, shaking off any excess.
2. Heat about 1/2 inch of mild olive oil in a heavy skillet over medium-high heat to about 350°F. Fry the sardines in small batches for 2 to 3 minutes per side, until golden and crisp. Transfer to a paper-towel-lined tray and let cool slightly.
3. Meanwhile, warm the 1/3 cup extra-virgin olive oil in a wide pan over low heat. Add the sliced onions and a pinch of salt and cook gently, stirring often, for 20 to 25 minutes until silky and lightly caramelized.
4. Stir in the vinegar, white wine, raisins, sugar, bay leaves, and cinnamon. Simmer gently for 6 to 8 minutes until the raisins plump and the liquid reduces slightly to a glossy syrup.
5. Toast the pine nuts in a dry skillet over low heat for 2 to 3 minutes until golden, then fold them into the warm onion mixture.
6. In a glass or ceramic dish, spread a thin layer of the onion mixture on the bottom. Arrange a single layer of fried sardines over it, then cover with more onions. Repeat layers, finishing with onions and a bay leaf pressed into the top.
7. Pour any remaining pan juices evenly over the top. Cool to room temperature, then cover and refrigerate for at least 24 hours and up to 3 days to let the sweet-sour flavors penetrate the fish.
8. Serve chilled or at cool room temperature, drizzled with a little of the marinade juices, with crusty grilled polenta or rustic bread on the side.

Cook’s Notes

• Always use the freshest sardines you can find; their quality defines the dish. Ask your fishmonger to butterfly them for you.
• Marinating time is non-negotiable for authentic flavor, plan at least 24 to 48 hours ahead, as the vinegar also gently cures the fish.
• Do not rush the onions; slow cooking draws out their natural sweetness and is the soul of the agrodolce.
• Substitute Muscat or Sauternes for the white wine for a richer, more aromatic sweet note.
• Serve on crostini with a thin slice of hard-boiled egg for a traditional Venetian cicchetti presentation.

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