Malt house
A malt house, or maltings, is a building where cereal grain is converted into malt by soaking it in water, allowing it to sprout and then drying it to stop further growth. The malt is used in brewing beer, whisky and in certain foods. The traditional malt house was largely phased out during the twentieth century in favour of more mechanised production. Many malt houses have been converted to other uses, such as Snape Maltings which is now a concert hall.
Production process
The grain was first soaked in a steeping pit or cistern for a day or more. This was constructed of brick or stone, and was sometimes lined with lead. It was rectangular and no more than 40 inches (100 cm) deep. Soon after being covered with water, the grain began to swell and increase its bulk by 25 percent.
The cistern was then drained and the grain transferred to another vessel called a couch, either a permanent construction, or temporarily formed with wooden boards. Here it was piled 12–16 inches (30–41 cm) deep, and began to generate heat and start to germinate. It spent a day or two here, according to the season and the maltster's practice.