Sauté chopped onion and garlic in olive oil before adding the sauce
Add a pinch of sugar or honey to balance acidity
Stir in tomato paste for a richer tomato flavor
Add butter for a smoother, rounder taste
Mix in grated Parmesan or Pecorino cheese
Add fresh or dried basil, oregano, and parsley
Include red pepper flakes for heat
Simmer the sauce longer to deepen the flavor
Add browned ground beef, sausage, or turkey
Stir in mushrooms, bell peppers, or spinach
Add a splash of red wine
Add a little pasta water to help the sauce cling to noodles
Finish with fresh herbs just before serving
Add a small amount of cream or milk for a softer sauce
Season with salt and black pepper to taste