My First Wine-Part 4: H2S and Why you Should Rack!
About a month ago, I discovered that my wine had developed a terrible funk. The smell could be described as burnt match stick with a touch of smoke. This “funk” is often caused by H2S production or Hydrogen Sulfide. This can occur because grapes were sprayed with chemicals too close to harvest, or leaving the juice on the gross lees too long amongst other reasons. After doing a little research I decided I need to rack right away. And that did help, but the Sang/Cab. blend had quite a bit of “funk” so we racked again and that seemed to do the trick! Which is great, because that means I didn’t have to add Copper Sulfate or add more SO2. Few! I was worried that the wines were ruined beyond the point of no return!
Lab Numbers Update: As of 12-11-11, the pH and TA for the Petite Verdot, Cabernet Sauvignon blend are 3.44 and 6.75 and the Sangiovese/Cabernet Sauvignon blend are 3.25 and 7.2. It appears that secondary fermentation has taken place with the P. Verdot blend as the pH as gone up and TA down. But it’s hard to tell with Sangio blend because it looks the pH dropped and that doesn’t make sense. I will have to re-test pH, and TA in the next few week. Hopefully I will be able to test for SO2 content as well as run the wine through MLF (malolactic fermentation) chromatography.
That’s it for this update. Now to think of some names for the wines while they spend the winter in our new wine shed. Will have to post pictures of that soon!
Posted on January 10, 2011, in My First Wine series, Uncategorized and tagged Cabernet Sauvignon, Copper Sulfate, Petit Verdot, Petite Verdot., PH, United States, wine, Wine tasting descriptors. Bookmark the permalink. Leave a comment.