I don’t wish to say much about it, but would like to draw your attention to this short story by Silas Weir Mitchell, first published in 1895. It is about a meeting of Madeira connoisseurs earlier in the nineteenth century, and I found it fascinating to observe similarities and differences in attitudes and beliefs compared to modern-day gatherings of wine-lovers.
The best place to read it I think is here on the MadeiraWineGuide website. The density of the text makes it difficult to read, but zooming in helps a bit. I finished up grabbing the text and printing to small pages using CutePDF for reading on my Kindle.