, along with other woods, such as chestnut, that are used for barrels. However as the french oak supplies are diminishing eventually other sources will be required.
Russian More aromatic, which brings out the fruit. Higher levels of vanillin but harsher and more drying on the finish.
Creamy vanilla with more coconut flavours. Softer tannins .
Smooth and subtle
Vanillin flavours can be more astringent than European Oaks.
High Tannins often used by North western Italian producers
Fennel and liquorice notes
Nutty and toasty.
Yes all that from the barrel .
However then we also have
....lighter toasts emphasize the fruit while heavier toasting develops more smoky, woody, and spicy flavours.