What Is Fermented Milk?
Fermented milk, also known as cultured milk, is a type of dairy food which is made by adding lactic acid bacteria, mold, or yeast to milk. The specific chemical reaction and product that results from fermentation depends upon the type of bacteria used and the process by which it is combined with the milk. It is commonly used to create dairy products such as yogurt, cheese, sour cream, and buttermilk. Fermented milk was first made in order to increase the shelf life of dairy products. It can also make milk easier to digest and enhance the flavor and texture of dairy foods.
The use of fermented milk dates back to prehistoric times. For the most part, the ancient method usually consisted of letting bacteria naturally occurring in the lactic acid of milk go through the fermentation process. Allowing the milk to ferment helped it be useable longer.
Now fermented milk is primarily made by adding bacteria to plain milk. The bacteria are sometimes even cultivated in laboratories so that they will have the precise attributes desired for a particular product. Some of the most common lactic acid bacteria used to make fermented milk include lactoccocus, lactobacillus, and leuconostoc.
The form and flavor of a fermented dairy food depends upon the type of milk product and the way in which the bacteria or mold are introduced. For example, yogurt and cheese are made with milk, while sour cream is started with light cream. Most milk products that are made from fermentation have at least one form of lactic acid bacteria. Some also have a specific type of mold or yeast in addition to the bacteria.
Fermented milk products can be beneficial to health, as the process often makes them more easily digestible for many individuals. In addition to products with beneficial live cultures like yogurt, bacteria such as acidophilus can be added to milk in order to make it more easily managed by those with lactose intolerance. There has also been evidence that certain fermented dairy foods can lower cholesterol and help ease diarrhea and other symptoms of inflammatory bowel disease.
Foods made from fermented milk can be found in several cultures around the world. Some popular foods include the French crème fraîche, which is a kind of sour cream, and lassi, a fruit-flavored yogurt beverage from India. There are also popular fermented dairy foods in regions including Scandinavia, Eastern Europe, and parts of Asia.
It's a wonder to think that so many centuries ago our ancestors were able to finally domesticate cows. They then began to milk the cows and realized what good nourishment this food gave them.
But the one big problem was that it didn't stay fresh for very long. Probably, by accident they discovered that fermented milk was a tasty thing and it lasted quite a while. This idea spread over the populated world. Almost every culture has fermented milk products that they still use today.
@dfoster85 - My babies liked yogurt, too. I even tried making it myself a few times! Anyone can make their own fermented dairy products and it's not as hard as you would think.
Basically, all you need to make your own yogurt is milk and, well, a carton of yogurt with live cultures. The bacteria will colonize the new milk and start it on its way! You can find all kinds of recipes online, most of them not requiring any special equipment.
Because they are so much easier to digest, even babies can eat cultured milk products like yogurt and cottage cheese (from about seven months - check with your pediatrician).
I had two closely spaced children and my older baby was still nursing during my pregnancy. I developed issues with my milk supply and my pediatrician recommended giving my baby yogurt as a way of making sure he was getting enough calcium even if he wasn't getting as much mother's milk as he usually was.
The other nice thing about realizing baby can have cultured dairy (which is a wide ground!) is that you realize you can share more of your table foods. Baby shouldn't have anything cooked with actual milk, but dishes with cheese, yogurt, etc. are fine. I liked to put them in the food processor with some water or baby formula and mash them up into my own baby food.
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