Bernardin Home Canning: Because You Can: Italian Style Tomato Sauce

Ingredients

• 8 cups (2000 ml) tomato purée, about 5 lb (2.2 kg), 20 plum tomatoes
• 2/3 cup (150 ml) finely chopped onion
• 2/3 cup (150 ml) finely chopped celery
• 1/2 cup (125 ml) finely chopped carrot
• 2 cloves garlic, minced
• 4 tbsp (60 ml) bottled lemon juice
• 2 tsp (10 ml) salt
• 1/2 tsp (2 ml) freshly ground black pepper
• 1/4 – 1/2 tsp (1-2 ml) red pepper flakes