Recipes: Grilled lamb-stuffed pitas with yogurt sauce

Preparation:     Preparation time: 15 mins  Cooking time: 20 mins  Serving: 6 Ingredients:   Sauce 1 cup plain Greek yogurt 1/2 cup minced fresh mint 2 tablespoons lemon juice 2 tablespoons tahini 2 tablespoons extra-virgin olive oil 1/2 teaspoon salt   Sandwiches 1 onion, cut into 1-inch pieces 1 cup fresh cilantro leaves 1/4 cup extra-virgin olive oil...