Milk and bacterial powder should be taken out of the refrigerator in advance and restored to room temperature; The inner container of yogurt machine is fully scalded and disinfected with boiling water; Adding about 800~ 1000ml of pure milk; Add 1 small package of yogurt powder (1g) and stir gently; Put it in a yogurt machine and ferment at constant temperature for 6- 10 hour, until the milk is observed to coagulate. The prepared yogurt can be eaten immediately or refrigerated for several hours, with better flavor! When eating, you can also add white sugar or other jam to taste according to your personal preference.