Traditional Spaghetti all'Amatriciana

Details

Ingredients

• 1 pound spaghetti
• 3 tablespoons extra-virgin olive oil, divided, or more if needed
• 1 onion, finely chopped
• 7 ounces pancetta bacon, diced
• 2 cups passata (crushed tomatoes)
• 1 tablespoon water, or more as needed
• ½ teaspoon white sugar
• 2 tablespoons grated Parmesan cheese
• 1 pinch red pepper flakes, or to taste
• salt and freshly ground black pepper to taste