Bring a saucepan of water to a boil and set up a bowl of ice water. Blanch the basil leaves for 30 seconds, until bright green and wilted.
Transfer the basil to the ice bath, then squeeze out as much water as possible and pat dry.
ice and water
Add the garlic, pine nuts, lemon zest, lemon juice, and Parmesan to the food processor. Pulse until the mixture looks like coarse sand, scraping down the bowl as needed.
1 clove garlic, ⅓ cup pine nuts, ½ lemon, 2 tablespoon lemon juice, 1 cup Parmesan Cheese
Add the basil and pulse in short bursts until finely chopped but not pureed.
2 cups basil leaves
With the machine running, pour in the olive oil in a slow, steady stream just until the pesto is loose and glossy. Stop the machine as soon as the oil is in.
½ -¾ cup extra-virgin olive oil
Season with salt to taste.
kosher salt