This great classic of Italian cuisine goes wonderfully well with pasta, but also pizza, bruschetta, and even meat... A sauce so easy to make and full of flavors. What's more, it's simple, we love it !
In the bowl of the chopper (or the mortar), combine the pine nuts, garlic and salt. Blend well to obtain a paste.
Add the basil leaves. Blend for a few seconds at a time (so as not to heat up the basil), until you get the desired consistency (creamy usually, I prefer it a bit grainy).
Add the cheeses, then start pouring in the olive oil. Mix as you add the oil.