Puree first 6 ingredients in a food processor until smooth. Pour half of sauce into a bowl, place lamb cubes into the bowl. Pour the rest of the sauce in, stir it up. Cover with plastic wrap and place in a fridge for 24-36 hours. When ready to cook, place onto 4 metal skewers (bamboo skewers will also work), alternating with the vegetables. Brush additional sauce onto them. Grill over hot coals, 8-10 minutes for rare-medium rare. Turn often, brushing with glaze.