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

2 teaspoons red pepper flakes

2 tablespoons red wine vinegar

Mixed greens, for serving