What’s the difference between French and American oak?

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The question

What’s the difference between French and American oak?

The answer

It’s all in the fibres, which impact wine flavour, barrel prices and even how the vessels are constructed.

Virtually all wood used for wine maturation belongs to three species of white oak, all of which have the advantage of being extremely water-tight relative to most other lumber. Two species, Quercus petraea and Quercus robur, generally are sourced from French forests (in some cases, Eastern Europe and Portugal), while Quercus alba, a.k.a. American white oak, grows mainly in the eastern United States and southern Canada. All three tend to improve wine flavour when used judiciously, adding subtle vanilla and spice accents, enhancing texture and even contributing tannic backbone for longevity.

Anatomically speaking, French oak is slightly more porous, and that’s a key difference. This means it must be split along the plane of vascular tubes that run parallel to the trunk in order to create staves that make up the barrel. American oak, on the other hand, can be sawn without sacrificing its water-tight character. Consequently, American-oak barrels cost less to make.

Generally, French oak is thought to impart a subtler influence and smoother texture, which is nice most of the time, while American oak is bigger on vanilla flavour and astringent tannins. American oak also sometimes tastes ever-so-slightly of coconut, which is a giveaway to a trained wine taster.

Continue reading: The Globe and Mail

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