Thursday, December 24, 2009

What's the thin layer that forms on the top of boiled milk called?

When you boil milk and then leave it to get colder, after some time there's a thin layer of something on the surface. Some children hate it. What's it called? Thanks everybody for help.What's the thin layer that forms on the top of boiled milk called?
I call it skin too, don't think it has a fancy nameWhat's the thin layer that forms on the top of boiled milk called?
It's called 'the skin' and its made up of solid proteins that combine with the milk’s fat molecules, which begin to evaporate as the milk is heated.


These proteins, casein and beta, clump together when the liquid reaches a temperature of around 45 to 50 degrees Celsius. As the heating continues, the soft protein layer begins to dry out, which is why the milk forms a skin on the liquid’s surface. This layer of skin forms a hard barrier, causing steam to build up beneath it and increase the liquid’s temperature. When left alone, this often causes the milk to boil over.





Though milk forms a skin when heated in most cases, there are several ways to prevent this skin from forming. If you plan to heat the milk over the stove, frequent stirring will break up the protein and fat molecules, so that the membrane will not develop. If you are heating milk in a microwave, you can place a wax paper lid known as a “cartouche” on top of the container, which will slow the evaporation process and maintain the milk’s liquid form.





The milk forms a skin only on heated milk that contains fat. If you are heating skim milk, there is no danger of a skin forming on top. Because skim milk contains no fat, the protein molecules have nothing to bond with, and are unable to coagulate.
It's just simply called 'top of the milk'. Most people hate it and it's certainly icky. The best thing to do is try to skim it off smoothly at one go with a large spoon, much like your pool cleaner does his trick of skimming the leaves off the pool. And if there are any little bits, catch them with a strainer when you pour and the milk will be perfectly palatable.
The thin layer is called ';skin';. You can eat it with no harm and in some cultures, it is considered a delicacy.
Its usually referred to as ';skin';.
Casein
Everyone calls it skin.
normal=y call it skin but its the cream or the fat of the milk
its called a skin
i call it skin.


but i really have no idea.
it's skin...





why is this question being asked again and again?





confused


dD

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