2, 1000 ml milk, put a pack of lactic acid bacteria, 500 ml milk put half a pack.

3. Ordinary pure milk will do.

4. First get a bottle of milk, then pour a bag of lactic acid bacteria, and then pour the remaining three bottles of milk into the container and stir well.

5. The yogurt machine is plugged in and functions for ten hours.

6. Add sugar and mix well.

7. Then, you can pour it into these small bottles. Refrigerate in the refrigerator.