Whilst investigating laser methods for some separate work I'm doing, I stumbled across this company VeriVin which uses laser techniques to determine liquids without opening them! They seem very interested in building up a large wine library with the profiles to determine what they are. They're near Oxford - perhaps we should reach out to have them as an educated monkey?
https://www.verivin.com/
To me, the physics seems sound - as to whether they can achieve a library of wine profiles with enough discrimination between them remains to be seen. Promising result however on this page (https://www.verivin.com/2018/10/counterfeit-wine/) where they show clear distinction between 3 types, two wines, where one of the wines has been through 'accelerated oxidisation'.
Know before you bid
Re: Know before you bid
Interesting. I’ve emailled, asking for the eigenvalues in the example.