I have tried to mark up the kind of information you'd offer when you're selling a premium wine, here's what it looks like: http://www.google.com/webmasters/tools/richsnippets?url=dekoninck.co.uk%2Fwine.html.
The Rich Snippets Tools is showing "Warning: Incomplete microdata with schema.org., and I can't work out what's missing.
Also, I'd love recommendations on
- the best way to mark up grape variety; currently done via
additionalType
- the best way to mark up region; currently done via
additionalType
- the best way to mark up producer; currently done via
manufacturer
which feels clunky - the best way to specify vintage; currently done via
releaseDate
which feels clunky - the best way to specify offering storage for wine; currently done via
businessFunction http://purl.org/goodrelations/v1#Maintain
- how I can specify VAT/tax in pricing, for storage, wine price and delivery price.