ArticlePercent New Oak, Overcompensating And The New Need For SanitationWritten by Alison CroweWhile the concept that is listed on some wine bottles or talked about in literature — % new oak — seems simple, there is a lot of nuance to this term. Learn about the concept as well as problems caused from overcompensating to fix a hydrogen sulfide stink with copper. Plus, the Wizard talks about the new need for sanitation in our world.Already a member? Log InYou'll Also Like Article MEMBERS ONLY Pressing Issues, Making Bread with Wine Yeast and Light Strike Dumping your pomace and finding the grapes still juice-laden after pressing is frustrating. The Wizard has some pointers for getting the most from your grapes as well as baking bread with wine yeast and the concerns of light strike on your wines. Article MEMBERS ONLY Acidity & Aging My situation is that the total acidity (TA) rises during the aging process.What could be causing this?