A recent masterclass in Hong Kong, based around the Domaine des Comtes Lafon Meursault Genevrières yielded several fascinating insights, partially to do with the progress or otherwise of premature oxidation, and partly to do with the relationship between Genevrières and Perrières. In all we tasted 9 Lafon Meursault Genevrières from 2009 back to 1990, with…