Tools and raw materials:
1, a bottle of yogurt seeds (you can use the original flavor of Wan Jiabao, although it is a little more expensive, but it is said that its strain is better; I haven't tried anything else. No matter what kind of yogurt is used as seed, it must be original), pure milk is 750- 1000ml, depending on the size of the container you prepare (a bottle of 125ml Wan Jiabao yogurt can be made at most 2kg at a time).
2, a jar (disinfection)
3, stirring rod (disinfection)
Step 4: a bucket
5, insulation materials (a sponge pillow, or something else, no, just use two bath towels. )
6. A piece of stuffing (a bath towel)
7. One plastic bag or one plastic wrap.
8. A thermos bottle
Production process:
1. Take the yogurt out of the refrigerator and warm it to room temperature (to improve the activity of lactic acid bacteria) for later use.
2. Put pure milk in hot water (bag, as long as it is warm, 70-80 degrees; If it is 1kg.
The box should be slightly opened (90-98 degrees) and soaked for 3-5 minutes, so that the pure milk can be heated to about 40 degrees (beneficial to the growth of lactic acid bacteria).
3. During the warm milk period, prepare a bottle for making yogurt (I use a large jar of Nestle 400g, which can make 750ml at a time) and disinfect it with boiling water; A stirring rod, sterilized with boiling water. And put some hot water in the hot water bottle for later use.
4. Take the milk out of the hot water, dry the surface moisture (to prevent the milk from flowing into the bottle and polluting the milk), and pour it into the jar. Open yogurt, add yogurt seeds (about 60ml in 750ml, about half a bottle of yogurt) according to the ratio of 6%- 10%, stir evenly with a stirring rod, cover with plastic wrap or plastic wrap, and tighten the bottle mouth.
5. Put the insulation material, thermos bottle and jar into the bucket in turn, and finally fill the gap with a bath towel, cover the lid and press the heavy object.
Step 6 wait 6-8 hours
7. Take out the jar and see that the milk has turned into an omelet, indicating that the production is successful.