The sourness is caused by over-fermentation, and the sourness can be removed by adding proper amount of baking soda and alkaline noodles. The following methods are introduced:

Preparation materials: 1g of baking soda, proper amount of warm water, a piece of dough and proper amount of alkaline noodles

Production steps:

1. Take 1g of baking soda and melt it with clear water for later use.

2. Add water to the over-fermented dough while stirring, knead the dough again, and add baking soda.

3. Knead into dough and cover it with plastic wrap. Cover and set aside for 1 hour.

4. Take 1g of alkali, knead it and mix it with thin noodles, sprinkle it on the panel, and start kneading the noodles.

5. Knead the alkali evenly and divide it into dosage forms, then the following operations can be carried out.