We went to Sanaa in August and they had pomegranate lemonade I believe. It also had some pomegranate foam on top, it was really good. Hopefully it'll still be on the menu.
EDIT: Ah, my bad. It's lemonade with wildberry foam on top. If you can't find pomegranate lemonade anywhere, I highly recommend this one. It really was delicious and a beautiful color. I'm sure it will be quite similar.