Pure milk, plain yogurt, sugar (the ratio of pure milk to yogurt is 5:1,and sugar can be more or less according to personal taste)

method of work

1, first prepare a container for the finished product, a fresh-keeping box or a sealed bottle, wash it, scald it with boiling water and dry it for later use. ? 2, milk and sugar into the pot, small and medium heat until slightly boiling, then leave the fire, constantly stirring during the period, so as not to paste the bottom. ? 3. When the pot wall is not hot, add the original yogurt and stir well. ? 4. Pour it into a container, wrap it in a towel, and let it ferment in a warm place until it is thick. ? 5, stored in the refrigerator freezer, take it with you, and use a clean spoon without oil and water when taking it.

Tips

1, milk is heated to a slight boiling point for disinfection, so that the shelf life of the finished product is longer. If the amount is small, it can be heated to a temperature that is not hot, and yogurt can be directly added. ? 2. The reason why the temperature that is not hot is emphasized is because this temperature is most conducive to fermentation. If the temperature is too high, the bacteria will be scalded to death, and if the temperature is low, the fermentation time will be too long. ? 3, the amount of sugar is added according to personal preference, like sweet, put more sugar, like sour, put less sugar. ? 4. In the process of fermentation, it is best for inexperienced friends to watch the fermentation situation frequently to avoid over-fermentation. If you find a watery transparent liquid on the top layer of the finished product, it is over-fermentation, and the milk is clear. You must immediately move the yogurt into the refrigerator for refrigeration and mix well when eating. ? Many children's shoes ask about the fermentation time, and answer this question: the fermentation time varies with different temperatures. In the environment of more than 30 degrees in summer, the fermentation time is two or three hours, and the room temperature is about 20 degrees in winter, so it can be placed at room temperature for one night. ? 5. If the room temperature is too low, it is not conducive to fermentation. You can put yogurt in a slightly heated microwave oven, oven or rice cooker, or even on a steamer with a slight temperature, but be careful to control the temperature. ? Many children's shoes also ask questions about this. Here is a supplementary explanation: the microwave oven is on high fire for two or three minutes, and the temperature in the oven is tested by hand. If it doesn't feel hot, you can put the yogurt in for fermentation; Heat the water in the steamer, don't boil the water, turn off the heat when the temperature in the steamer is just not hot, and add yogurt for fermentation. Remember that it is the temperature in the steamer, not the water temperature; Similarly, both ovens and rice cookers can be heated to a temperature that is not too hot to ferment yogurt. If you have a kitchen thermometer, you can measure it. The temperature is about 30 degrees. If you use these auxiliary equipment for fermentation, you don't need to wrap a towel. ? 6. Don't finish the prepared yogurt, and leave some as an introduction next time you make yogurt.

material

Main ingredients: milk, 500g, plain yogurt, 50g, tools: sealed fresh-keeping box 1 piece, spoon 1 piece, rice cooker 1 piece, auxiliary materials: boiled water and clear water.

method of work

1. Fresh-keeping box+lid and spoon washed and scalded with boiling water? 2. Add clean water to the rice cooker and heat it until the wall of the cooker is slightly hot. Pour 500g of milk into the fresh-keeping box, sit in the hot water of the rice cooker, cover the lid and heat the milk to warm? 3. Take the fresh-keeping box containing milk out of the rice cooker, cover the lid again, and add 50g yogurt to the milk? 4. stir the milk and yogurt evenly with a small spoon? 5. Cover the crisper? 6. Put the fresh-keeping box into the rice cooker, cover it, turn off the power, and ferment for 12 hours. (This is plain yogurt without sugar and other additives! If you like sweetness, then add a proper amount of honey and mix well, and it's ok)