Cork News

Do Cork Closures Protect Wines from Dimethyl Sulfide Aromas?

Do Cork Closures Protect Wines from Dimethyl Sulfide Aromas?
The results from two market surveys of commercial Sauvignon Blanc wines suggest that those bottled with a cork finish develop less DMS than adjacent wines finished with screw caps. This evidence suggests that a wine closure with higher oxygen permeability offers some protection against excessive formation of DMS after bottling.

Natural Cork wins the North Coast Wine Challenge

Of 1,050 eligible entries, 174 wines were awarded gold medals with 90 or more points. The wines were presented for an invitational tasting on May 17, 2015.

A review of the gold medal winners shows that 162 wines (93%) were finished with cork closures.  Eleven wines were in screwcaps.

Effects of Bottle Closure Type on Consumer Perceptions of Wine Quality

For the Chardonnay samples, the knowledge that the wine was sealed with a natural cork did not significantly affect the liking or quality scores. However, when participants knew that the sample was bottled with a synthetic cork, the liking score tended to be lower and the difference was nearly significant, but quality ratings did not change. When participants learned the wine had a screwcap, both the liking and quality ratings were significantly lower.