Italian Grandma's Spaghetti Meat Sauce Recipe

Ingredients

• 2 tablespoons olive oil
• 1 large yellow onion, finely chopped
• 4 cloves garlic, minced
• 1 1/2 pounds ground beef (80/20)
• 1 teaspoon salt
• 1/2 teaspoon black pepper
• 2 tablespoons red wine vinegar
• 2 (28-ounce) cans whole San Marzano tomatoes
• 2 teaspoons dried oregano
• 1 teaspoon dried basil
• 1 bay leaf
• 1 teaspoon sugar
• Optional: pinch of red pepper flakes
• 1 pound spaghetti
• Freshly grated Parmesan cheese
• Fresh basil leaves for garnish