PESTO ALLA GENOVESE





2 cups fresh basil leaves
2 tablespoons pine nuts
2 cloves garlic
1/2 cup extra-virgin olive oil
salt to taste
2 tabblespoons freshly grated parmesan cheese
2 tablespoons freshly grated Pecorino  cheese
2 tablespoons water from the pasta pot
pat of butter for serving
 
Combine thebasil, pinenuts, garlic, olive oil, and salt in a food processor and chop until smooth.
Place the mixture in a large serving bowl and stir in the cheeses.
Add the water and butter and stir well.
Serve at room temperature.