How to Make It
Light a grill or preheat a grill pan. In a blender, combine the olives with 1/3 cup of the olive oil and puree. Add the garlic, lemon zest, vinegar and rosemary and puree. Transfer to a serving bowl.
In a medium bowl, mix the cumin, paprika and the remaining 1 tablespoon of olive oil. Add the lamb and turn to coat. Season with salt and pepper.
Grill the lamb over high heat until medium-rare, about 2 minutes per side. Transfer to a plate and let stand for 5 minutes. Skewer each lamb cube with a toothpick. Transfer to a platter and serve with the black-olive oil.