Mediterranean Escabeche Mixed Grill
Ingredients 1 large red onion 1 bunch parsley (6 ounces), tough stems removed 6 ripe tomatoes (3 pounds), quartered 1/2 cup dry white wine 3 tablespoons tarragon vinegar, or any other white-wine vinegar 1/4 cup fresh lemon juice 1/4 cup fresh lime juice 1/8 teaspoon freshly ground black pepper Large pinch cayenne pepper 1/2 teaspoon red-pepper flakes 5 tablespoons capers, rinsed Nonstick vegetable-oil cooking spray 1 pound medium shrimp, peeled and deveined, tail sections left on...