Ingredients

2cupsplain whole-milk yogurt

1½cupswater

2lbsleg of lamb,boneless, cut into 1½-inch cubes

1½tsppure chile powder

1tspturmeric

1largegarlic clove,minced

½tspcayenne pepper

kosher salt,to taste

6lemon peel strips,(1×2-inch)

3tbspghee,or unsalted butter

2tbspfresh lemon juice

Preparation

In a large bowl, whisk 1 cup of the yogurt with the water. Add the lamb cubes, toss to coat, and refrigerate overnight.

Light a grill. Drain the lamb and pat dry with paper towels. In a large bowl, whisk the remaining yogurt with the chile powder, turmeric, garlic, cayenne, and 1 teaspoon of salt. Add the lamb, toss to coat and let stand for 10 to 20 minutes.

On each of the metal skewers, thread a piece of the lemon peel. Thread the lamb cubes onto the skewers and season with salt. In a small bowl, combine the ghee with the lemon juice.

Grill the skewers over moderately high heat for about 3 minutes, turning, until starting to char all over.

Continue to grill for about 4 minutes longer, turning and basting with the ghee and lemon juice, until medium-rare.

Serve the lamb on or off the skewers.