Ingredients

  • 1/2 cup distilled white vinegar
  • 1/2 cup Dijon mustard
  • 1/2 tablespoon agave nectar
  • 1 yellow onion, thinly sliced (1 1/2 cups)
  • Kosher salt
  • Freshly ground white pepper
  • 1 tablespoon peanut oil, plus more for grilling
  • 2 pounds trimmed leg of lamb, cut into 1-inch pieces
  • Freshly ground black pepper

Method

  • In a medium bowl, combine the white vinegar with the Dijon mustard and agave nectar.
  • Stir in the onion slices and season with salt and white pepper.
  • Light a grill or preheat a grill pan and oil the grates.
  • In a large bowl, toss the lamb with the 1 tablespoon of peanut oil and season generously with salt and black pepper.
  • Thread the lamb pieces onto 8 skewers.
  • Grill the lamb over moderate heat, turning occasionally, until it is charred in spots, 6 to 7 minutes for medium meat.
  • Transfer the lamb skewers to a platter and serve with the mustard onions.