A brewhouse may refer to a company that brews beer or the building used for this process, but it’s also a collective term for all the components a brewery will need for the initial brewing stage. These components typically include the following:Mash mixer,Lauter tun,Hot liquor tank,Boil kettle,Whirlpool. A larger brewery may use a five-vessel brewhouse, in which each of these components is a separate vessel.