add a little of the pasta water to thin out the sauce. Remove from the heat, and, just before serving, add the butter, basil, and cheese, mixing thoroughly until the pasta is an orange hue.

3. Bring to a simmer and cook slowly for 45 minutes to 1 hour. 4. Stir in the basil and season with salt and pepper. 5. This sauce can be left chunky or blended in a food processor for a smooth sauce.