Marinated Kebabs (Ina Garten)

My husband: The guy marinated chunks of meat in yogurt and I forget what else. Make that. It was Greek. Me (after looking at all the shows on FN for that day): Which guy? Husband: Did I say guy? It was Barefoot. Yesterday, I think. From Barefoot Contessa: Go Greek, Episode BX0204H

• Ready In: 12 hrs 15 mins
• Serves: 4-6

Ingredients

• 1  lb plain yogurt
• 1⁄4 cup olive oil, plus more for brushing grill
• 1  teaspoon lemon zest
• 1⁄4 cup fresh lemon juice (2 lemons)
• 5  tablespoons fresh rosemary leaves
•  salt & freshly ground black pepper
• 2  lbs boneless lamb or 2  lbs top round beef
• 1  red onion

Directions

1. In a large bowl, combine yogurt, olive oil, lemon zest, lemon juice, rosemary, salt to taste, and pepper to taste; add lamb or beef, stir to coat, cover and marinate in the refrigerator overnight or up to 2 days.
2. Prepare a charcoal grill; if using wooden skewers, soak in water 30 minutes so they do not char.
3. Cut lamb into 1 1/2 inch cubes, you'll have about 20.
4. Cut onion into 8 wedges, separating into sections of 3 or 4.
5. Thread skewers with 3 or 4 pieces of meat alternating with onion sections.
6. Season both sides with salt and pepper.
7. Grill, turning 2 or 3 times, until medium rare, about 10 to 15 minutes.