In a large bowl combine ground lamb, egg, minced garlic, bread crumbs, chili powder, black pepper, cumin, salt, and onion salt. With clean hands mix together well.
Form into 2oz portion oval meatballs. Insert a skewer into the meatball and press around the skewer.
Grill over medium-high heat on a gas or charcoal grill, cooking about 5 minutes on each side, or until internal temperature reaches 160 degrees.
Combine all ingredients in a blender jar. Blend until smooth.
Serve with kofta kebabs.
Note: USDA recommends ground lamb reach an internal temperature of 160F.