1. Prepare dried cauliflower: When buying dried cauliflower, choose dried cauliflower with good quality and bright color.

2. Cleaning: soak the dried cauliflower in clear water and gently rub it with your hands for several times to remove impurities and dust on the surface.

3. Soak the hair: put the cleaned dried cauliflower into a large bowl or container, and add enough water to soak it completely. The soaking time varies with the thickness and quality of dried cauliflower, and it usually takes 30 minutes to 2 hours.

4. Change the water: During the foaming process, the water will turn yellow or muddy, which is a manifestation of the dissolution of impurities in the cauliflower. In order to remove impurities, it is necessary to pour out the soaking water regularly, rinse the dried cauliflower with clear water, and then add new clear water to continue soaking.

5. Check the softening degree: After soaking for a period of time, you can gently pinch the cauliflower with your hand. If it feels soft and elastic, it means that it has been soaked. If you still feel a little hard, you can continue to soak your hair for a while.

6. Prepare for cooking: The soaked dried cauliflower can be used for frying, cooking soup or cold salad. According to the dishes you want to make, the soaked dried cauliflower is processed and cooked in the next step.

Please note that when soaking dried cauliflower, the soaking time can be adjusted according to personal taste and needs. If the time is too long, it may cause the cauliflower to become too soft and affect the taste. If there is not enough time, it may cause the cauliflower to be still hard and difficult to cook. Therefore, it needs to be adjusted according to the actual situation.