Gristmill

A gristmill (also known as a grist mill, corn mill, flour mill, feed mill or feedmill) grinds cereal grain into flour and middlings. The term can refer to either the grinding mechanism or the building that holds it. Many old farms used gristmills to process their crops into usable food.

Grist is grain that has been separated from its chaff in preparation for grinding. This makes the grain easier to mill and helps create better-quality flour. Gristmills were very important in the past because they allowed people to turn their harvests into bread and other food products.

These mills were often powered by water or wind, showing how people used natural forces to help with everyday tasks. Today, while most flour is made in large factories, the idea of a gristmill still reminds us of how our ancestors prepared food.

History

Main article: Watermill

See also: List of ancient watermills and List of early medieval watermills

Long ago, people found clever ways to grind grains into flour using water power. The Greek writer Strabo wrote about a water-powered grain mill near a king’s palace before 71 BC. Early mills used horizontal wheels made of paddles, which turned a stone to grind the grain. These simple mills needed fast-flowing water to work well, so they were often built in mountains.

Later, vertical wheels were used, especially in the Roman Empire. These mills could grind a lot of grain, with one famous Roman mill able to process about 28 tons of grain each day. Water mills continued to be used after the Roman times, and later, wind-powered mills were built in places like Afghanistan, Pakistan, and Iran.

By the year 1086, there were thousands of water-powered mills in England, with one mill for every 300 people. These mills were very important to villages, as they turned grains into the flour needed for bread.

In old times, a gristmill was a local mill where farmers brought their grain to be ground into flour. The mill owner took a small part of the grain as payment. Most of these mills were powered by water, though some used wind or animals. Water would flow to turn a wheel, which then turned the millstones that ground the grain.

Inside the mill, grain was lifted to the top and then poured onto the millstones below. The ground flour was collected in sacks. The distance between the millstones could be changed to make finer or coarser flour. Some mills were later made fully automatic by American inventor Oliver Evans, who created machines to move grain and flour without needing as many workers.

Modern mills

Modern mills often use electricity or fossil fuels to power large steel or iron rollers. These rollers separate the outer parts of the grain, called the bran and germ, from the inner part, called the endosperm. The endosperm is then ground to make white flour, which can sometimes be mixed back with the bran and germ to make whole grain or graham flour.

Different milling methods can create different looking flours, but they can also make flours that work the same way and have similar nutrition. Many bakers and people who like natural foods prefer stone-ground flour because it has a nice texture and flavor. They believe it keeps more nutrients because the stones grind slowly and don’t make the grain too hot, which helps protect the vitamins. Stone-milled flour often has more thiamin than other types of flour, especially when made from hard wheat.

Gristmills only grind grains that have had their stalks and chaff removed, but in the past, some mills also had tools to prepare the grain by removing stalks, sorting, and cleaning it before grinding.

Modern mills are usually places that sell flour. They might be privately owned and take money or trade for grinding grains, or they might be part of big companies that buy grain before it is ground and then own the flour that is made.

Pests

One common pest found in flour mills is the Mediterranean flour moth. The moth larvae make a web-like material that can clog the machinery, sometimes causing the grain mills to stop working.