You just reminded me - I was an altar boy at my Grandad's Russian Orthodox church for a while. Not really a job but those Cossacks sure did tip well when they had a few :-) The transubstantiation was done in the Orthodox style behind closed doors so only the priest and altar boys knew what was going on. I can confirm it was no different to the 'open' RC transubstantiation but with the words sung in Slavonic it became quite magical. Even as a non believer I would be quite happy to go to a similar mass just for the experience. Maybe the incense had a narcotic effect too :-)

DtG