Homemade yogurt is a little thin. What is the general reason for the weak fermentation of yogurt?

Fresh milk must be heated and sterilized to produce milk, otherwise there are too many mixed bacteria, which is not conducive to the development and reproduction of lactic acid bacteria, so the things made are very thin. Whether the yogurt container is completely sterilized. After boiling the sugar, be sure to wait until the milk is at room temperature before injecting the vaccine (this is very important, otherwise it will burn the germs). It is more appropriate to add 10% yogurt in the market. For example, 500 grams of fermented milk and 50 grams (a cup of yogurt) are enough. This amount is to make lactic acid bacteria create a positive total advantage from the beginning and have enough working ability to inhibit all kinds of miscellaneous bacteria.

The molding time is 2.5 to 4 hours (the optimal time is 3.5 hours at 42℃). It should be noted that if fermented feed is added instead of yogurt, the molding time is 6 to 8 hours and the ambient temperature is kept between 40 and 45. (Fermented feed types: Bifidobacterium, Streptococcus lactis infection, Streptococcus thermophilus and Streptococcus Lithuania. The yogurt with the best quality and taste should be added with Streptococcus Lithuania and Streptococcus thermophilus in the ratio of 1: 1g or 1:4g. Streptococcus Lithuania can improve the odor and Streptococcus thermophilus can improve the aroma). Stop alcohol production when alcohol condenses. Cured yogurt with good alcoholicity must be frozen 1h at 0℃ to 4℃ before taking it.

Fresh milk should be heated and sterilized before it is made into yogurt, otherwise there will be too many mixed bacteria, which is not conducive to the development and reproduction of lactic acid bacteria; Containers of yogurt also need to be thoroughly disinfected; There is also to ensure that the ambient temperature is not too high, otherwise it will kill the fermenting bacteria. There are two points to pay attention to when making yogurt: first, the utensils for making yogurt cannot have oil; Second, the choice of milk is very important. The lower the production process, the greater the success rate of making yogurt. The best are Yili milk and pure milk from Mengniu Dairy. Personally, I think adding sugar before cooking will be harmful. In fact, put it in the refrigerator after cooking, and pour some pure honey on it when eating. It tastes good. Fresh milk must be heated and sterilized to produce milk, otherwise there are too many mixed bacteria, which is not conducive to the development and reproduction of lactic acid bacteria, so the things made are very thin.

The production method of yogurt is as follows: Frequently asked questions: If it is cold room milk, put it in the greenhouse before adding the vaccine, otherwise the fermentation time will be greatly increased; The right amount of sugar in milk can make the taste more delicate (according to my taste); In the case of cold weather in winter, please heat the water at home yogurt machine to improve heat conduction and reduce fermentation time. Raw materials: fresh milk (raw milk), bacterial powder. Put raw milk into the rice cooker; Press the "porridge soup" button to boil and disinfect! Unplug the power supply after boiling; Take out the boiled fresh milk, and let it cool until it is hot and humid; At this time, you can see a layer of milk skin on the surface of fresh milk! Gently draw the milk skin aside with chopsticks and pick it up; Wet-heat treated fresh milk; Preparing bacterial powder; Pour the bacterial powder into the liner.

Add a small amount of fresh milk and mix well to prevent the bacteria powder from sticking to the bottom! Add 2 tablespoons sugar; Stir well until the sugar melts! Add fresh milk until it is 8 minutes full, and stir well while adding fresh milk! Put some warm water into the household yogurt machine (just don't scald it! ) put the gallbladder in the home yogurt machine into the home yogurt machine; Cover the inner cover tightly; Cover the outer cover tightly and seal it tightly; Plug in the power supply and wait patiently for 8 hours! This is also a good yogurt; Dig a spoonful and have a look. Not bad, just like tender old tofu! Careful mixing! Look at the drawing effect is also good, there is no difference between boxed milk!