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Farmer selling the churned butter (machine in the foreground).

Churning is the process of shaking up cream (or whole milk) to make butter, and various forms of butter churn have been used for the purpose. In Europe from the Middle Ages until the Industrial Revolution, this was generally as simple as a barrel with a plunger in it, which was moved by hand. Afterward, mechanical means of churning were usually substituted.

Butter is essentially the fat of milk. It is usually made from sweet cream. In the USA, Ireland and the UK, salt is usually added to it. Unsalted (sweet) butters are most commonly used in the rest of Europe. However, it can also be made from acidulated or bacteriologically soured cream. Well into the 19th century butter was still made from cream that had been allowed to stand and sour naturally. The cream was then skimmed from the top of the milk and poured into a wooden tub.

Buttermaking was done by hand in butter churns. The natural souring process is, however, a very sensitive one and infection by foreign microorganisms often spoiled the result. Today's commercial buttermaking is a product of the knowledge and experience gained over the years in such matters as hygiene, bacterial acidifying and heat treatment, as well as the rapid technical development that has led to the advanced machinery now used. The commercial cream separator was introduced at the end of the 19th century, the continuous churn had been commercialized by the middle of the 20th century.

The creation process[edit]

A barrel-type butter churn.

Changing whole milk to butter is a process of transforming a fat-in-water emulsion (milk) to a water-in-fat emulsion (butter). Whole milk is a dilute emulsion of tiny fat globules surrounded by lipoprotein membranes that keep the fat globules separate from one another.

Butter is made from cream that has been separated from whole milk and then cooled; fat droplets clump more easily when hard rather than soft. However, making good butter also depends upon other factors, such as the fat content of the cream and its acidity.

The process can be summarized in 3 steps:

  1. Churning physically agitates the cream until it ruptures the fragile membranes surrounding the milk fat. Once broken, the fat droplets can join with each other and form clumps of fat, or butter grains.
  2. As churning continues, larger clusters of fat collect until they begin to form a network with the air bubbles that are generated by the churning; this traps the liquid and produces a foam. As the fat clumps increase in size, there are also fewer to enclose the air cells. So the bubbles pop, run together, and the foam begins to leak. This leakage is called buttermilk.
  3. The cream separates into butter and buttermilk. The buttermilk is drained off, and the remaining butter is kneaded to form a network of fat crystals that becomes the continuous phase, or dispersion medium, of a water-in-fat emulsion. Working the butter also creates its desired smoothness. Eventually the water droplets become so finely dispersed in the fat that butter’s texture seems dry. Then it is frozen into cubes, then melted, then frozen again into bigger chunks to sell.

Types of butter churns[edit]

Butter churns have varied over time as technology and materials have changed.

Churn with plunger
Ethnographic Museum of Western Liguria, Cervo, Italy
  1. Butter was first made by placing the cream in a container made from animal material and shaking until the milk has broken down into butter. Later wood, glass, ceramic or metal containers were used.
  2. The first butter churns used a wooden container and a plunger to agitate the cream until butter formed.
  3. Later butter churns used a container made from wood, ceramics or galvanized (zinc coated) iron that contained paddles. The hand-turned paddles were moved through the cream quickly, breaking the cream up by mixing it with air. This allows the butter to be made faster than by simply agitating the cream.
  4. Centrifugal cream separators allow the properties of centrifuge to be applied to butter making. Instead of having spinning paddles, the paddles are fixed and the container spins. This allows better separation of the butter from the buttermilk and water.

With electric mixers and food processors commonly available in most household kitchens, people can make butter in their own homes without a large churn. These small appliances are used to mix the cream until it is close to forming solid butter. This mixture is then mixed by hand to remove the buttermilk and water.

Historical reference[edit]

Churning butter (photo taken in 1944)

The Household Cyclopedia of 1881 instructs:

"Let the cream be at the temperature of 55° to 60°, by a Fahrenheit thermometer; this is very important. If the weather be cold put boiling water into the churn for half an hour before you want to use it; when that is poured off strain in the cream through a butter cloth. When the butter is coming, which is easily ascertained by the sound, take off the lid, and with a small, flat board scrape down the sides of the churn, and do the same to the lid: this prevents waste. When the butter is come the butter-milk is to be poured off and spring water put into the churn, and turned for two or three minutes; this is to be then poured away and fresh added, and again the handle turned for a minute or two. Should there be the least milkiness when this is poured from the churn, more must be put in.

"The butter is then to be placed on a board or marble slab and salted to taste; then with a cream cloth, wrung out in spring water, press all the moisture from it. When dry and firm make it up into rolls with flat boards. The whole process should be completed in three-quarters of an hour. In hot weather pains must be taken to keep the cream from reaching too high a heat. If the dairy be not cool enough, keep the cream-pot in the coldest water you can get; make the butter early in the morning, and place cold water in the churn for a while before it is used."


External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Churning_(butter) — Please support Wikipedia.
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50 news items

Central Kentucky News
Thu, 04 Sep 2014 07:15:00 -0700

Last week, while I was at a friend's house, I saw something that made me think back to my days growing up on a farm. Spying a butter churn brought back many memories for me. I thought back to the many times my mom, my sister and I spooned or ladled off ...
The Manitoban
Mon, 15 Sep 2014 18:09:50 -0700

Nickel has ambitions of travelling to New York City, rather than being trapped in her oppressive hometown where the biggest opportunities are slaughtering chickens or churning butter, and where there is absolutely no drinking, dancing, recreational sex ...
Neosho Daily News
Sat, 13 Sep 2014 23:28:25 -0700

The monument hosted the annual Prairie Day with numerous living history stations such as how to make lye soap, banjo music, how to preserve food, cooking over an open flame, using a spinning wheel, churning butter and doing laundry. “When he was at ...
Delmarva Daily Times
Sat, 13 Sep 2014 15:07:30 -0700

Many elderly folks today can still remember, as children, churning butter in cylinder-shaped crocks also decorated with strokes of blue. Preparing food for crock storage was a seasonal, routine way of life, when substantial quantities of fruit ...
Green Bay Press Gazette
Thu, 11 Sep 2014 13:48:45 -0700

... we choose to remember the lady who let her grandkids dance around the house to "The King and I." And rather than thinking about all the moments she couldn't be there with us, we remember the many hours she kept us entertained "churning butter" (yes ...
The Providence Journal
Thu, 11 Sep 2014 21:52:30 -0700

These engines will be shown performing such farm chores as powering saws, splitting wood and churning butter. For auto buffs, there will also be a classic car show on Sunday, Oct. 12, running from 9 am to “whenever,” according to Barber. He said there ...
Brandon Valley Challenger
Tue, 09 Sep 2014 13:37:30 -0700

For Paul Mickelson, Homesteader Day Harvest Festival is like making a visit to the log cabin his dad grew up in as a young boy. “My dad grew up in a cabin just like this one,” the Sioux Falls man said as he got a workout churning butter. “They had 10 ...
Daily Journal Online
Mon, 08 Sep 2014 04:58:46 -0700

"I learned about milk and churning butter. There was a machine that would make ice cream for you. "They had a little miniature mill stone where you could grind wheat and learn about how that was done. It was really neat watching the Civil War soldiers ...

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