What abbreviations are used on french oak wine barrels?

There are no standard abbreviations used on French oak wine barrels. The barrels are typically marked with the cooperage's name, the size of the barrel, and the year it was made.

However, some common terms used to describe French oak barrels include:

* "Allier" and "Nevers": These are the two main forest regions in France where oak trees used for barrels are grown.

* "Tronçais": This is a specific forest in the Allier region known for producing high-quality oak.

* "Tonnellerie": This is the French word for "cooperage," which refers to the workshop where barrels are made.

* "Demi-muid" (600L), "Pièce" (225L), "Barrique" (225L), "Bouteille" (100L), "Foudre" (1000-2000L): These are some of the common sizes of French oak barrels.

While there are no standard abbreviations, some cooperages might use their own abbreviations or markings to identify their barrels. However, these are not widespread or universally understood.

It's important to note that the type of oak (Allier, Nevers, Tronçais), the cooperage, the grain (tight, medium, or wide), and the level of toasting are more important factors to consider when choosing French oak barrels than any specific abbreviations.