12 (6-inch) wooden skewers
1 1/2 pounds ground lamb
2 scallions, finely chopped
2 teaspoons onion powder
2 teaspoons chopped fresh oregano leaves
1 teaspoon chopped fresh rosemary leaves
1 teaspoon garlic powder
1 teaspoon ground cumin
1/2 teaspoon dried thyme
Salt and freshly ground black pepper
Oil, for brushing
1 bag pita bread, at least 6 loaves
Tzatziki Sauce, recipe follows
2 cups Greek strained yogurt
1/2 cucumber, seeded and chopped
1 garlic clove
2 1/2 teaspoons hot sauce (recommended: Frank's Red Hot)
1 teaspoon lemon juice
Salt and freshly ground black pepper