Kebab Marino vat (Marinated Lamb Kebab)

Lamb

2 pounds boneless lamb steak; cut into 1-in cubes
3 medium onions; quartered
1 teaspoon salt
1 teaspoon ground cumin seed
1/4 teaspoon pepper
1/4 cup cognac; arak or dark red wine

Mix everything together and marinate for 1 to 1-1/2 hrs. This distributes flavors and tenderizes meat. Put  4 pieces of lamb alternating w/onion quarters on each metal skewers. Grill over charcoal, traditional method, for 10 minutes, or to taste: rare, medium, or well-done. Serve warm w/other Afghan foods.