A rare London appearance by leading terroir consultant turned winemaker, Pedro Parra, for a seminar and tasting tied to the publication of the second edition of his book Terroir Footprints turned into a troubling look at the future of winemaking in the face of climate change. For a start, the wine world’s most prominent terroiriste thinks traditional viticultural techniques are becoming obsolete as climate change is causing rising alcohol levels in wine and the loss of regional typicity, permanently affecting historic regions such as Burgundy and Montalcino. Peter Dean reports.