Milk sourdough: features and technology of preparation
For a long time we cannot imagine our life without products useful for our gastrointestinal tract: kefir, fermented baked milk, yogurt, cheeses. They owe their effectiveness in restoring the intestinal microflora to lactic ferment. It will be discussed in our article.
What does it represent?
The term "sourdough" usually refers to milk that has been converted by live lactic acid bacteria or yeast. But in fact, science knows other ways to turn milk into curdled milk.
Sourdough is obtained from:
- abomasum, that is, parts of the stomach of young calves (we are talking about pepsin and rennet, which is used in the manufacture of cottage cheese and cheeses);
- cultures from special fungi (meaning mushroom cheese sourdough and kefir mushroom known to many);
- culture of viruses and bacteria, which was specially isolated for the preparation of fermented milk products (here we will include dry and liquid bacterial starters).
Let us dwell on the third type, since it is it that is used most often both in enterprises and in home recipes.
Kinds
Bacterial starter cultures differ in the composition of their microflora. Each of the five types is used to make a specific product.
Let's consider these types in more detail.
- Lactic acid streptococci growing in moderate temperatures. With the help of these microorganisms, cottage cheese, homemade cheeses, sour cream and yogurt are obtained.
- Heat-loving lactic acid bacteria are used in the manufacture of yogurt, the so-called Mechnikov and southern curdled milk, fermented baked milk and Varenets.
- Heat-loving lactic acid sticks of the Lactobacillus acidophilus class are indispensable in the preparation of kefir and koumiss.
- The combination of the first and second types is suitable for making sour cream and low-fat drinks.
- The combination of heat-loving sour-milk sticks with yeast is necessary for the manufacture of special infant formulas and acidophilic milk.
Benefit
Milk sourdough is a versatile product with which everyone can easily improve their quality of life. Lactic acid bacteria help the whole body, this is a scientifically proven fact. They normalize the state of the gastrointestinal tract (it starts to work like clockwork), “fly out” viruses from the body, help cleanse organs and remove toxins.
The nervous system also loves little helpers: you will worry less and start getting enough sleep if yogurt or kefir is present in your daily diet. In addition, by consuming fermented milk products on an ongoing basis, you strengthen bones and raise immunity.
On a note! If you are forced to drink a course of antibiotics, add a couple of glasses of fermented baked milk to the menu for the day. Lactobacilli will remove any side effects from medications and you will feel good.
Adherents of proper nutrition are very fond of milk sourdough in its pure form. It has a low calorie content (42 kcal), while helping to convert milk protein into amino acids, which are very easy to digest. A good habit is to drink a glass of kefir at night. While you sleep, little helpers are actively working with your body. In the morning you will feel it, feeling a surge of strength.
Harm
A poor quality product can lead to a malfunction in the intestines. Therefore, if you prepare sourdough at home, strictly follow the recipe and observe the temperature regime.
Otherwise, the product is completely harmless. Drinking lactic ferment is recommended even by doctors. It will benefit both young and mature and old people. Yogurt can be used by pregnant women and women who practice breastfeeding, as well as children from six months.
Recipes
Fermenting milk at home is as easy as shelling pears. Don't forget to observe the temperature regime! Otherwise, you risk depriving your yogurt of all useful properties.
Boil milk if it is homemade and pasteurized. For UHT and sterilized milk, this step is not needed. After boiling, be sure to cool the milk to 35-45 degrees in cold water in the same pan in which it was boiled. Ferment a warm drink either with the remains of the previous yogurt, or store-bought fat sour cream, or natural yogurt without preservatives in the proportion of 0.5 cups per 1 liter of milk.
You can also ferment milk bought in the pharmacy chain with an ampoule with natural bifidobacteria. Before use, its contents are diluted with a small amount of water. Perhaps this option is preferable, since the quality of the product is evident.
Now you just have to pour the starter into containers and place in a dark, warm place. After 6-10 hours the product will be ready. As a result, the starter is a thick mass with whey, which must be mixed until smooth before use. You can drink sourdough as an independent drink or use it to make homemade yogurt, kefir or cottage cheese. In this article, we have collected several delicious recipes in which sour milk will be the main ingredient.
Important! For all ready-made fermented milk products, the only storage method is allowed - in the refrigerator. At 0 degrees, dishes can be stored for up to 8 days.
Varenets from the oven
This recipe is passed from mouth to mouth by our grandmothers. With its help, it turns out to prepare a delicious drink from childhood.
Take one and a half liters of milk and pour it equally into three bottles. Bottles, in turn, place in a deep clay bowl and send to an oven preheated to 150 degrees. When the milk is covered with golden foams, they must be carefully lowered with a spoon to the bottom. Repeat this four times. After these simple manipulations, pour some milk from the bottles - you should get a glass.
It must be cooled, mixed with 1 tablespoon of sour cream and returned to the milk in the oven. Now pour the future drink into glasses, distributing the foams, and leave to reach in a warm place.
To speed up the souring process, put brown bread crusts in containers. When the mixture acquires a characteristic sourness, you can rearrange it in the refrigerator.
Kefir
To prepare it, you will need a special fungal sourdough. Boil milk, cool to 22 degrees, dilute the leaven in it. Now it remains only to wait 48 hours for the kefir to ripen in the warmth. The drink obtained in this way can be used as a starter for a new portion of this product.
Cheese
Let's start with a simple fresh cheese recipe. Traditionally, the first step is to boil the milk. Add a little vinegar or lemon juice to it before boiling. The acid will help curdle the milk mass.
When an elastic lump remains in the pan, you can start cooking cheese. To do this, place the mass under the load. The heavier it is, the denser the cheese will be in consistency.
For comparison, here is a recipe more complicated. Boil milk, cool to 35 degrees. Add sour cream or curdled milk, salt and spices to taste. Then put it on fire again.
When the product curdles, break the egg into the mass and return to the stove. Wait for the moment when the mass begins to stretch - this will indicate that it is time to transfer it to a fabric bag and place it under the press.
You will learn about the benefits and dangers of milk sourdough in the following video.
Please tell me how many ampoules of Bifidumbacterin will be required to ferment 2 liters of milk (milk from a private farm)? Thank you.