Gelatin to help

How many of you haven't cooked a jelly? This is when you cook for a long time, for example, bones, and then cool the broth. By the way, aspic is not only a culinary concept, but also a chemical one. An extensive group of colloidal systems is called jelly and is formed due to the fact that the bones contain a special protein substance - gelatin. By the way, it is sold in stores in a well-cleaned form. And technical, with impurities, gelatin is also sold in stores, but not in food, but in household, and is called carpentry or animal glue. Let's, as an experiment, prepare technical gelatin. Unfortunately, we are unlikely to be able to prepare edible gelatin; its cleaning is too complicated.

Unfortunately, we are unlikely to be able to prepare edible gelatin; its cleaning is too complicated

Wrap some raw bones in a rag and smash them with a hammer to make bone crumbs. These crumbs must be freed from fat. Fat dissolves well in gasoline (carefully, gas is flammable!). Pour the bone crumbs with gasoline, mix and leave for half an hour. Then drain the gas and rinse the bones several times with hot water.

Now make a decoction of fat-free bones. To do this, it is not necessary to take a pan, an empty well-washed tin can is also suitable. Boil the bones in the water for a long time, and then you have to boil the broth over low heat until it becomes thick and viscous.

Now be patient. Put the broth in a dry and warm place and look at it from time to time. After a few days, the broth will dry out and turn into brown carpentry glue. Although outwardly it seems dry, it contains a lot of bound water, which gelatin absorbed during cooking. Then, when you decide to use the glue and heat it in a water bath, part of the bound water will stand out and the glue will swell.

It is quite possible to glue various wooden objects with such glue from gelatin. But for our further experiments, it is not clean enough. It is better to put them with ready-made gelatin from the store.

To prepare a gelatin solution, put 10 g of powder in a quarter cup of cold water and let it soak and swell properly; it will take at least an hour. Then heat the mixture to about 50 degrees and, while stirring, wait until the gelatin is completely dissolved. Pour a part of the gelatin solution with a thin layer onto a plastic film (not onto glass - you will not tear the gelatin from it later) and dry well in air. You will get a thin gelatin leaf.

Swollen gelatin has an interesting property: it allows you to get and maintain a beautiful ice pattern for a long time.

Prepare the solution in the same way as in the previous experiment, only take gelatins two to three times less (or dilute the remaining solution with warm water). Pour still warm solution onto a glass plate and immediately place it either in the cold (in winter) or in the freezer, in its coldest place. Water will crystallize out in the form of an ice pattern, as in winter on windows. If you leave gelatin gelatin in the frost for several days, the ice will gradually evaporate. Let the gelatin thaw slowly - and it will retain the imprint of ice crystals. It will be very beautiful!

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