When baking soda is added to vegetable juice, it will not change color after heating, and the color will be brighter, the green is greener and the purple is more purple. The amount of baking soda should not be too much, just one gram.

When cooking pasta with vegetable juice, the color of the vegetable juice will be bright and rich at first, but it will darken and fade after steaming, mainly because there is no color fixation. Adding baking soda to the vegetable juice can make the color more firm and stir until the yeast is completely melted.

Kneading skills:

1. In order to avoid the imbalance between water and flour, you should not add enough water at one time, but pour the flour into the basin or panel, dig out a groove in the middle, slowly pour the water into the groove and stir it slowly with chopsticks.

2. When the water and flour are fully and evenly mixed and the water is absorbed by the flour, the flour is repeatedly rubbed and mixed by hand to make the flour into many small pieces, commonly known as "snowflake noodles". In this way, water will not flow everywhere because the flour has no time to absorb water, and it will not stick all over the hands and pots with batter, which is unfavorable for operation.