Years ago, when we were staying in Los Altos hills in California on the southern perimeter of San Francisco, we were taken to vìsit a local winery called Ridge.   Since then I have always kept my eye out for their wines, although seldom been able to afford them, not least because, to my knowledge, they are only available from a wine merchant in Southwold and our local branch of the Bottle Apostle.   So it was a pleasure when attending an event last night to celebrate – and consume – some of the world’s greatest wines to find that, in between the Louis Roederer champagne and the Chateau Lafite Rothschild, the main course was introduced by Hugh Johnson as being accompanied by Ridge Monte Bello Cabernet Sauvignon 1991.