Deposit wine cask is a process used in winemaking to store and age wine. The term refers to the six components involved in this process: TARTAR (6 letters), TUN (3 letters), VAT (3 letters), LEES (4 letters), ullage (6 letters), and OAK (3 letters). TARTAR is a type of sediment that forms in wine barrels, while TUN is a large barrel or cask used for storing wine. VAT is a large container used to store liquids, such as wine, and LEES are the sediment that settles at the bottom of the VAT. Ullage is the amount of air space between the top of the wine and the cask, and OAK is the type of wood used to make the cask.