The term HOPS-DRYING OVEN can be summarized as an OAST, which is a four-letter acronym for an oven used to dry hops. Hops are the female flowers of the hop plant, which is a key ingredient in beer. The drying process helps to preserve the hops and bring out their flavor. The oven is typically heated with hot air, which helps to draw out the moisture from the hops. The dried hops are then used to add flavor and aroma to beer.