Grilled Shrimp with Walnut Pesto
Ingredients For the pesto: 1/2 cup walnut halves Grated zest and juice of 1 large lemon 1/3 cup extra-virgin olive oil Kosher salt 5 scallions, thinly sliced 1 cup packed fresh basil 1/2 cup packed fresh parsley For the shrimp: 2 pounds large shrimp, peeled and deveined, tails intact 2 tablespoons vegetable oil Kosher salt …