The term BREWERY FURNACE can be summarized as an OAST, which is a four-letter word. An OAST is an oven used in the brewing process to dry hops and other ingredients. It is also known as a kiln, and it is used to heat the ingredients to a specific temperature before they are added to the beer. The OAST is an essential part of the brewing process, as it helps to create the desired flavor and aroma of the beer.