Cold Shrimp and Vegetable Spring Rolls with Cashew Dipping Sauce

INGREDIENTS

• 1/4 cup finely chopped scallion greens
• 1 pound large shrimp (about 15), shelled and deveined
• 1 tablespoon fresh lemon juice, or to taste
• 3/4 cup alfalfa sprouts
• 3/4 cup finely shredded Bibb lettuce
• twelve 6 1/2-inch rounds of rice paper*
• 1 tablespoon vegetable oil
• 2 garlic cloves, minced
• 1 tablespoon soy sauce, or to taste
• 3/4 cup finely shredded carrot
• 3/4 cup plain yogurt
• 1 teaspoon rice vinegar, or to taste
• cayenne to taste
• Garnish: coriander sprigs
• 3/4 cup fresh coriander leaves
• 1 cup unsalted roasted cashews (about 1/4 pound)