01 - Bring a large pot of generously salted water to a rolling boil. Add the pasta and cook according to package directions until al dente. Reserve 4 fl oz of the starchy pasta water before draining through a colander.
02 - While the pasta cooks, combine the wild garlic leaves, toasted pine nuts, grated Parmesan, and peeled garlic clove in a food processor. Pulse several times until the ingredients are coarsely chopped and well combined.
03 - With the food processor running continuously, slowly drizzle in the extra virgin olive oil through the feed tube. Continue processing until a smooth, vibrant green paste forms. Add the lemon juice and season with salt and black pepper to taste.
04 - Transfer the drained pasta back to the pot or to a large serving bowl. Add the wild garlic pesto and toss thoroughly to coat every strand. Splash in small amounts of the reserved pasta water until the sauce reaches a silky, clinging consistency.
05 - Divide among warmed plates or bowls. Finish with an extra shower of grated Parmesan and a generous crack of black pepper, if desired. Serve immediately while hot.