• 1 Carrot, finely chopped (about 1/3 cup), small
• 1 Celery stalk, finely chopped (about 1/4 cup)
• 1/4 cup Flat-leaf parsley, fresh
• 4 Garlic cloves, grated (about 1 tablespoon)
• 1 1/2 (28-ounce) can Tomato, whole
• 1 Yellow onion, finely chopped (about 3/4 cup), small