To prepare pesto: immerse in a blender, a bunch of parsley, bunch of Basil, roasted any nuts (peanuts, hazelnuts, almonds, pine, Brazil, etc.), 50g of Parmesan cheese (broken into pieces), garlic clove, salt, pepper CH. m., according to taste.
Start to blend everything into a paste, adding a little olive oil. The mass we need this time is thick, so it may be that 150 ml of oil will be a lot.
Stop the blender, taste it, add some lemon juice or white balsamic.