Kebab-e Tabrizi with Grilled Lamb and Sumac

Method

1. Trim lamb, cut into 1-inch cubes. Toss with oil, sumac, cumin, salt, and pepper.
2. Let marinate for 30 minutes.
3. Preheat grill to medium-high. Cook skewers for 10-12 minutes, turning occasionally.
4. Rest for 5 minutes before serving.
5. For whole cuts, check a minimum internal temperature of 63°C (145°F), then rest for at least 3 minutes before serving.