What is best growing medium for vanilla?

[JanS]

Hi - my wife and I just got back from a bike ride during which we stumbled upon a Hawaiian festival. One vendor lady had all sorts of plants associated with Hawaii, including @ 8" tall cuttings of vanilla pompona. We just had to get one for our collection ! The plant is potted in what looks like peat moss. I asked the lady if it should be in bark instead and she said that is also possible. I know some of you have vanilla plants and actually got them to bloom (e.g. Suzanne - cb977) - so can you tell me what potting medium you use? And the obvious additional question: has anyone managed to get vanilla beans from the flowers on an indoor plant?

Many Thanks!