You use San Marzano tomatoes (or regular diced tomatoes if that's all you have)
And olive oil
and a bunch of other stuff. Then you mix it with pasta and you have the recipe Enrico Caruso liked to cook for himself.
This is yet another style I'm working in now. I've done a few assignments like this, and love it! Its a pen line, scanned into the computer, and painted with photoshop. I'm working on some more samples so I'll have enough to make a section on my website. Not sure what to call it though - "Casual", "Relaxed", "Naive", "Sketchbook", "Had a couple glasses of wine" ...