Wash the basil leaves very quickly in cold water and put them to dry on a kitchen towel.
Begin by crushing the cloves of garlic with a small amount of salt with a mortar and pestle. Keep crushing until a paste is formed.
Add the pine nuts and keep crushing. Then add some basil leaves and crush them. Use a soft rotating movement and keep adding the leaves until all of them have been added and a paste has formed.
Add the grated cheeses and the oil, mix into the paste. The pesto is ready to be used.
Caution
Nutritional information shall not be used for medical reasons.