First, the milk is heated to about 40 ℃, can be heated in a microwave or placed in boiling water, the yogurt at room temperature.
Second, according to four milk, yogurt 1 ratio into Xiaopen in, stir with a clean chopsticks.
Third, the sealed pot with plastic wrap.
Fourth, a good plain yogurt to stir the mixture on the radiator, about 25 ℃.
Five, six hours later, was a semi-solidified Xiaopen in the yogurt-like white and smooth surface, there is yogurt Hong overflow.