Adzharian-style green beans with cinnamon-flavored yogurt sauce

A Georgian dish from Paula Wolfert's "The cooking of the Eastern Mediterranean". I'm not sure if I would recognize this as Mediterranean/Middle Eastern, but hey, it has plenty of yogurt, right?

I made the mistake of bringing the heat too high after adding the yogurt, which caused it to curdle slightly (note the chunky appearance in the photo). Also, I felt the yogurt had a very rich, almost cheesy, complexion, making the dish a little heavy for my palate. Housemate Mike loved it, though.