Oak barrels

For aging wine, winemakers have a choice between two main types of containers: stainless steel tanks and oak barrels. This choice largely depends on the winemaker's intended aromatic notes for the final profile of the wine.
Indeed, it is primarily the container that will impart aromatic richness to the wine, and aging in oak barrels allows for a subtle exchange between air and wine, bringing out woody notes.
In Burgundy, when wine is stored in traditional oak barrels with a capacity of 228 liters, it is referred to as being aged "in pièces."
In Burgundy, red wines spend 12 to 24 months in barrels, while white wines are aged for 8 to 16 months.