This delicious yogurt soup just "Hits The Spot" on a hot summers day! You can find variations of this recipe from Eastern Europe to the Middle East. I especially loved the yogurts in Turkey, Iran and Greece. If possible, try making your own home made yogurt. I use a Salton yogurt Maker and the yogurt comes out rich and creamy. However, a good substitute is the Greek yogurts found in some of the bigger supermarkets.