Step 1: Prepare 2 tablespoons of flour to be used as dough.

Step 2: Then prepare half a bowl of water.

Step 3: Slowly pour the water into the flour, stirring while pouring.

Step 4: Stir the flour into a flocculent shape.

Step 5: Then knead into dough, preferably dry. Then cover the basin with a layer of plastic wrap and put it in a cool and ventilated place.

Step 7: After 2 days, the old noodles will be thinner and sour than before, with some small holes on them; So the old noodles are ready.