The term 'IMPROVE AT A WINERY' can be broken down into three crossword solutions: AGE (3 letters). Ageing is a process used in winemaking to improve the quality of the wine. It involves storing the wine in oak barrels for a period of time, allowing the flavours and aromas to develop and mature. This process can also help to reduce the tannins in the wine, making it smoother and more enjoyable to drink.