Slow-Cooker Lamb Ragù Recipe from Central Grazing Company

Ingredients

• 1 (28 oz) can whole, peeled tomatoes
• 1 cup dry red wine
• 1 large yellow onion, diced
• 1/4 cup tomato paste
• 1/4 cup fresh oregano leaves
• 4 garlic cloves, minced
• 3 lbs lamb stew meat
• 1 teaspoon dried red chili flakes
• 2 1/2 tablespoons salt
• 1 to 2 tablespoons red wine vinegar
• 1 pound dried rigatoni
• Parmesan cheese, for grating