Lamb Kofta:
12 (10-inch) wooden skewers
1 yellow onion, peeled and coarsely chopped
1 1/4 pounds ground lamb
2 Tbsp. finely chopped fresh parsley
3/4 tsp. salt
1/2 tsp. ground allspice
1/4 tsp. ground cinnamon
Cucumber-Yogurt Sauce:
1 medium cucumber
1 (6 to 7 oz.) container plain Greek yogurt
1 clove garlic, finely chopped
1/4 tsp. salt