Zesty Orange Lamb Kebabs

Lamb Marinade

• 1 boneless leg of lamb (about 4 pounds), trimmed and cut into 11 ‚ÅÑ 2- to 2-inch cubes
• 2 cups (475 mL) fresh orange juice
• Zest of two oranges
• 1‚ÅÑ2 cup (125 mL) olive oil
• 2 tbsp garlic, minced
• 1 tbsp canned chipotle chilies, finely chopped [Look for sulphite-free brands.]
• 1 tbsp ground cumin
• 2 tbsp fresh oregano, chopped
• 1 tsp fresh ground pepper
• 1 tsp salt

Skewers

• 8-10 medium metal skewers
• 1 red onion, cut into 1-inch chunks
• 1 each, red and yellow pepper, sliced into 1-inch chunks
• 12 button mushrooms