How to dry watercress without discoloration is as follows: choose fresh watercress, blanch it before drying, avoid direct sunlight when drying, add salt, and put the dried celery into a sealed bag.

1, choose fresh watercress: fresh watercress is not easy to change color after drying, so you should choose fresh watercress before drying.

2, blanch before drying: blanch the watercress in boiling water, take it out and put it into cold water to soak for a period of time, and then dry the water after drying. This can remove the bacteria and enzymes on the surface of watercress and reduce the possibility of discoloration.

3, sun drying to avoid direct sunlight: sun drying should avoid direct sunlight, choose the appropriate cool and ventilated place for sun drying, so as to avoid excessive tanning and discoloration.

4, add salt: in the process of drying, you can add salt, not only can play a role in inhibiting the growth of bacteria, but also can prevent watercress discoloration.

5, dry celery into a sealed bag: after drying watercress should be stored in a sealed bag as soon as possible to avoid moisture and oxidation, thus reducing the possibility of discoloration.