The first ingredients needed are: oats, koji, and rock sugar.

Steps:

1. Pick and wash the oats.

2. Add water to the pot until the oats are covered, bring to a boil over high heat, then turn to medium-low heat and cook until the water dries up. Just like steaming rice, simmer over low heat until the oats are cooked.

3. Pour the steamed oats into a clean container, cut them open with a spoon, and let them cool down.

4. Add koji to the boiling water that has been cooled in advance and mix well.

5. When the oats are dry and warm (about 35 degrees), pour in cold boiled water with distiller's yeast and mix well, and make a nest in the middle.

6. Cover and wrap it in a fresh-keeping bag, cover it with a small quilt, and leave it in a warm place to ferment for 24-36 hours.

After 7.36 hours, open it and you can smell the aroma of wine.

In this way, delicious milk tea is ready! Add some rock sugar to make it more delicious.

Sweet egg, Lanzhou specialty snack, has a long history and delicious taste. It is endlessly memorable. It is a refreshing and delicious drink in summer, and also a snack in your mouth when you have nothing to do. Local sweet fermented grains and milk tea go together. It immediately became popular on the streets.