How To make Il Pesto Original Recipe Genova Liguria Italia

Ingredients
3
each
bundles (use only leaves) of fresh basil (7 rooted plants each-one: prefer little leaves ones; if you find them, double basil leaves quantity)
1
each
garlic clove (more if you like)
1
each
pinch of coarse salt
1
each
handful (50 gr.) of freshly grated parmigiano (parmesan) cheese (if you don't find it choose a cow's milk cheese that can be grated: parmigiano is the best one)
1
each
handful (50 gr.) of freshly grated sheep's milk cheese (pecorino sardo -from Sardegna, italian island- is the best one if you find it )
1/2
each
handful (25 gr.) of pine nuts
3-4
each
walnut kernels
5
tablespoon
extra good olive oil =extra-virgin oil (not a very strong one, from Liguria is very indicated)

Directions:
We use in Genoa up to-day a marble mortar to pound (the italian "pestare": that's why the name 'pesto'). A marble mortar and a wood pestle. (Nowadays some people use a blender or food processor to combine ingredients of pesto and you can do in this way if you are in a hurry but if you want to taste a very delicious pesto you have to pound ingredients)
Pound all ingredients except oil and blend them till they become a regular, smooth and consistent cream. Now you can add and trickle olive-oil, very slowly in your sauce.
If you use the sauce for spaghetti (linguine, fettuccine) or gnocchi or trofie (little Genoese hand-made pasta) put the pesto in a bowl and add to it 1/2 cup of pasta hot water; then strain your very hot 'al dente' (underdone, not very much) pasta and add it into the bowl. Mix all together and eat.
We also use to flavour our minestrone (vegetable soup) with pesto.
If the pesto sauce you have done is too much for your spaghetti, no matter bottle it in a small pot and put olive-oil over the top of pesto sauce, so you can preserve it in your fridge.