Coat grill rack with nonstick cooking spray. Preheat grill to medium (300°F to 350°F). For the sauce, in a small bowl whisk together sour cream, 1 teaspoon of the lime zest, 1 tablespoon of the lime juice, plus cilantro. Cover and refrigerate until ready to serve.
In a medium bowl combine shrimp, garlic, remaining 1/2 teaspoon lime zest, remaining 1 tablespoon lime juice, and salt and pepper to taste; toss. Thread shrimp onto 5 (10-inch) skewers.* Grill 3 to 5 minutes per side or just until shrimp turn pink.
Place shrimp evenly in tortillas. Top with cabbage, and drizzle with sauce. If desired, serve with salsa verde.
Serving Size 1
Servings 0
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.