Tunisian Grilled Salad By PBS

• 2 to 3 medium-large green peppers (I use 3 poblanos, or 2 bell peppers and 1 jalepeno)
• 2 to 3 Roma tomatoes (or any plum or paste tomato)
• 1 medium onion
• 3 cloves garlic
• ¹⁄₂ teaspoon ground caraway
• 3 tablespoons olive oil
• 1 teaspoon salt
• ¹⁄₈ teaspoon black pepper

Optional garnishes:

• ¹⁄₄ cup flaked tuna
• 2 hard-boiled eggs
• A dozen olives
• 2 teaspoons finely chopped fresh parsley