Greek yogurt with shallots. From the New Persian Kitchen. Delicious and versatile on so many things-Persian kuku, lavosh, baked potato, roasted vegetables, fajitas, etc. I prepared two versions: the first one as written below. For the second version I roasted the shallot, cooled, minced and added it to the yogurt and replaced the salt and pepper with a sprinkle of sumac. Either version is very special. If you cannot find thick, Greek-style yogurt you can thicken plain yogurt using cheesecloth or a fine mesh strainer and place over a bowl.