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 tsp ground caraway
• 3 tbsp olive oil
• 1 tsp salt
• 1/8 tsp black pepper

Optional garnishes:

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