Grilled Shrimp with Pistachio Pesto

Name: Grilled Shrimp with Pistachio Pesto
Ingredients: For the shrimp and dry brine:; 2 pounds shrimp, peeled and deveined, tail on, butterflied; 1/2 cup kosher salt, divided; 1/2 cup sugar; 1 tablespoon crushed red pepper flakes; For the pistachio pesto:; 3/4 cup pistachios; 2 lemons, juiced; 1/2 chipotle pepper with adobo sauce, chopped; 1/2 cup Italian parsley, chopped; 1/2 cup fresh basil, chopped; 1 tablespoon brown sugar; 1/2 teaspoon salt; 1 teaspoon ground pepper; 2 tablespoons olive oil; 1 tablespoon Dijon mustard