Last week, I wrote about a winery executiveâs call for critics to highlight â even favor â wineries that practice environmentally friendly viticulture. The executive cited the Michelin guides as an example, for bestowing green stars on restaurants that use organic ingredients. After that article was written, Robert Parker Wine Advocate, a leading subscription website now owned by Michelin, announced that it was offering a filter allowing readers to search for wines certified as made using sustainable, organic or biodynamic farming methods. It also unveiled a special Robert Parker Green Emblem for producers who, the publication said, âhave demonstrated extraordinary efforts in the pursuit of environmentally friendly practices.â