Question: How often can an oak tree provide cork for wine bottle closures?
Answer: Pleased to acknowledge the overall improved quality of cork closures coming mainly from Portugal but also Spain. Generally, it takes 15 years for a newly planted cork tree to produce any usable bark but for much better quality “the rule of 9” must be added onto that and then can be harvested on a continuing 9-year cycle thereafter. Fun to visit the “breadbasket” of Portugal in the Alentejo region and see it all happening!
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