After too many seasons where the possums got in first and ate all the flower buds from my zygopetalum orchid,  this year I bought it inside early and was rewarded by three, by my modest standards for orchid culture, perfect flower spikes. These have been out for about four weeks now, and by the second week the nodes started to produce a sticky clear nectar which takes delicious to a new level. It might be that just having a single drop of the nectar makes it precious but this is sweet, in well, a complex floral way  that subtly echoes the flowers perfume. This must be what Coleridge wrote of in Xanadu.