Stewed Tomatoes

Bahan-bahan (4 porsi)

• 1 pound ripe tomatoes
• 1 tablespoon olive oil
• 1 rib celery (finely diced)
• ¼ cup diced green bell pepper
• ¼ cup finely diced onion
• 1 clove garlic (minced)
• ¼ teaspoon dried basil
• ¼ teaspoon salt (or to taste)
• ¼ teaspoon granulated sugar