What does seasoning do to oak and how long is the process?

• A. Lowers humidity, reduces bitter flavours and increases aroma compounds; 2-3 years
• B. Raises humidity and increases bitterness; 1 year
• C. Removes all tannins; 5 years
• D. Lowers humidity but reduces aroma; 6 months

Answer: (A)

Seasoning is the air-drying of oak to reduce its moisture content before it’s used for barrels. By lowering the wood’s moisture, you reduce the internal humidity that can drive the extraction of harsh compounds when the barrel is filled with wine. As the oak dries, the tannins become mellower and the wood’s aroma precursors become more controlled, so the eventual flavor and aroma that the barrel can contribute are enhanced when the wine ages in it. This is typically done over a period of about 2–3 years, which fits the common practice for producing well-behaving oak barrels.

The other options don’t fit the process: raising humidity would increase the risk of undesirable flavors and slower drying; removing all tannins is not possible in oak; and durations like 6 months or 5 years don’t align with how long seasoning usually takes or what results in the best balance of tannins and aroma.