Monkfish Brodetto with Cannellini - Lidia

Ingredients

• 1 1/2 pounds monkfish fillet
• Kosher salt
• Freshly ground black pepper
• All-purpose flour, for dredging
• Vegetable oil, for frying
• 3 tablespoons extra-virgin olive oil
• 1 large onion, finely chopped
• 2 tablespoons tomato paste
• 1/4 cup red-wine vinegar
• Two 15-ounce cans cannellini beans, rinsed and drained
• 1/4 cup chopped fresh Italian parsley