In the process of blanching celery, blanch celery with boiling water as much as possible. Celery is rich in vitamins. If it is cooked for more than 2 minutes, the vitamins in celery will be lost. If the blanching time exceeds 10 minute, all the nutrients in celery will be lost. The enzyme activity in celery is the strongest at high temperature, so it is necessary to blanch at high temperature for a short time.

Matters needing attention in celery purchase

Fresh celery is flat. Celery stored for a long time, the tip of the leaf will tilt, the leaves will become soft, and even yellow and rust. Choose plants with thick and tender petioles, 40-50 cm long, without yellow leaves, diseased leaves and broken leaves. Its leaf color and petiole color conform to the characteristics of the original variety, and it is better to be neat and even. According to the truth, the petiole is not hollow, the petiole is wide, the leaves are dark green and the mouth is crisp and tender.

No matter what kind of cooking recipe celery is, it is not suitable to buy celery with dark green leaves. Because the leaves are "black", it means that the growing period is dry and short of water, and the growth is slow, and there are many crude fibers.

The above contents refer to Baidu Encyclopedia-Celery.