A basic tomato sauce should be very simple. High quality tomatoes don’t require a ton of added ingredients to be incredibly delicious. Skip the onion and carrot, and try this recipe using nothing more than tomatoes, olive oil, salt, basil, and a little bit of garlic. You’ll be amazed at how yummy it is! While San Marzano tomatoes are fantastic, you don’t need to splurge on them to make a great sauce. What’s important is to look for pure tomatoes. Don’t buy anything with any other added ingredients. No salt, no garlic, no basil, no citric acid. Just tomatoes.