1. Preparation materials: fruits (such as apples, pears, peaches, strawberries, etc. ), sugar, citric acid and clean containers (glass or ceramic containers are recommended).

2. Wash the fruit, cut it into small pieces and put it in the prepared container.

3. Add an appropriate amount of sugar, which is generally 10%-20% of the weight of the fruit.

4. Add a proper amount of citric acid, which is generally 1%-2% of the fruit weight.

5, stir well, let sugar and citric acid fully penetrate into the fruit.

6, cover, put in a cool and ventilated place, stir once a day, generally need to ferment for 3-7 days.

7. After the fermentation is completed, filter out the residue, and store the yeast liquid in a clean container and put it in the refrigerator.