STEWED SUMMER VEGETABLES SICILIAN STYLE - Lidia

Ingredients

• 1 medium red bell pepper, cored, seeded, and cut into 1-inch squares
• ½ cup vegetable oil
• 1 medium eggplant, cut into 1-inch cubes
• ¼ cup extra-virgin olive oil
• 1 medium zucchini (about 6 ounces), cut into ½-inch cubes
• 1 medium onion, chopped
• 2 stalks celery, chopped
• ½ cup golden raisins
• ¼ cup pitted green olives, coarsely chopped
• 1 tablespoon toasted pine nuts
• 1 tablespoon drained capers in brine
• 1 teaspoon kosher salt, plus more to taste
• Pinch crushed red pepper flakes
• 2 fresh medium tomatoes, peeled, seeded, and diced
• ¼ cup white wine vinegar
• 2 tablespoons sugar
• 1 tablespoon chopped fresh mint leaves