Mash Tuns, Springfield Brewery, Wolverhampton, West Midlands
This brewery was built in 1873, for William Butler, as a self-contained site with maltings, brewhouse, stables and offices. In Brewing barley malt is crushed to make a substance called grist. This is then mixed with hot water in a mash tun, like those pictured, to convert the starch into malt sugars. This liquid, known as wort, is then mixed with hops for flavour and yeast to start the fermentation process.