A glass cork? Is this state of the art or gimmick?And I was just getting used to the screwtop.
Hi Lars,
Great subject and question! Get used to screw top and composite synthetic corks. The technology is much more advanced than glass and has superior advantages—mainly having adjustable breathing rates to allow for different fill levels and controlled oxidation. In my opinion, the only question left for screwtops and synthetics to reign supreme over natural cork, is whether or not they will stand the test of time on cellar-worthy bottles. Michel Laroche is one of the world’s top winemakers and a leading expert and researcher on the subject. Peter Liem, Senior Correspondent of Wine & Spirits Magazine and superb blogger on wine, is a good resource on all things wine (especially Champagne and French wine in general) and deals with the subject.
As for my wine, we use very expensive natural cork (yes there is cork and then there is cork). A typically mass produced premium wine (from a winery that produces at least 30,000 cases) that uses natural cork, can possibly have up to 8% bad wine due to cork issues. For a winery with smaller production, vigilant quality control, and the use of more expensive cork, the percentage of cork taint is significantly reduced. Since I started working with Terralsole in August of this year, I have opened, for sampling purposes, 60 bottles of our Brunello with not one bottle having cork taint. That is an amazing statistic and speaks to the severe regimen our winemaker, Mario Bollag, uses in the cellar. He buys the best and longest corks he can find and sterilizes each batch himself (cork producers do this, but with varying degrees of success). He then hand inspects each cork during bottling. We make only 2,500-3,000 cases of Brunello, depending on the vintage, and since our Brunello retails for $85.00 on the shelf, we feel that it is worth the added expense to insure the consumer has a better experience, especially when you consider that many of our customers will lay down a good vintage for 10 years or so.
I know of no other industry that accepts an 8% fail rate on their finished product. But that is the state of the wine business today and why winemakers that do not want to accept the poor quality control reality of mass produced corks, are moving towards the screw cap.
Hi Lars,
Great subject and question! Get used to screw top and composite synthetic corks. The technology is much more advanced than glass and has superior advantages—mainly having adjustable breathing rates to allow for different fill levels and controlled oxidation. In my opinion, the only question left for screwtops and synthetics to reign supreme over natural cork, is whether or not they will stand the test of time on cellar-worthy bottles. Michel Laroche is one of the world’s top winemakers and a leading expert and researcher on the subject. Peter Liem, Senior Correspondent of Wine & Spirits Magazine and superb blogger on wine, is a good resource on all things wine (especially Champagne and French wine in general) and deals with the subject.
As for my wine, we use very expensive natural cork (yes there is cork and then there is cork). A typically mass produced premium wine (from a winery that produces at least 30,000 cases) that uses natural cork, can possibly have up to 8% bad wine due to cork issues. For a winery with smaller production, vigilant quality control, and the use of more expensive cork, the percentage of cork taint is significantly reduced. Since I started working with Terralsole in August of this year, I have opened, for sampling purposes, 60 bottles of our Brunello with not one bottle having cork taint. That is an amazing statistic and speaks to the severe regimen our winemaker, Mario Bollag, uses in the cellar. He buys the best and longest corks he can find and sterilizes each batch himself (cork producers do this, but with varying degrees of success). He then hand inspects each cork during bottling. We make only 2,500-3,000 cases of Brunello, depending on the vintage, and since our Brunello retails for $85.00 on the shelf, we feel that it is worth the added expense to insure the consumer has a better experience, especially when you consider that many of our customers will lay down a good vintage for 10 years or so.
I know of no other industry that accepts an 8% fail rate on their finished product. But that is the state of the wine business today and why winemakers that do not want to accept the poor quality control reality of mass produced corks, are moving towards the screw cap.

