To make the yogurt tahini dressing, mix herbs, maple syrup, and tahini paste with the yogurt. Use greek yogurt because it is thick and perfect for the dressing. Use hung curd in case of unavailability of greek yogurt. Garnish with roasted walnut and coconut slices and serve at room temperature. Skip this step and simply use lemon juice, salt, and pepper.  This quinoa salad will taste great even without tahini dressing so it is completely optional.