Vegetables to be eaten after blanching: These vegetables usually have high starch content or astringent taste, but they can have crisp and tender taste after blanching in hot water, and can be eaten after being mixed with seasonings, such as mung beans, lotus roots and yam. Celery has the functions of "cooling stomach, clearing away heat and expelling wind, relieving sore throat, improving eyesight and benefiting qi, enriching blood and invigorating spleen, relieving cough and diuresis, lowering blood pressure and calming the nerves". So celery is called "medicine in the kitchen". Eating celery regularly can enhance resistance, especially in summer, people are often prone to symptoms such as cold, fever, sore throat, oral ulcer and upset. Eating celery often helps to clear away heat and toxic materials, eliminate diseases and keep fit. However, the antihypertensive effect of celery after frying is not obvious, so it is best to mix it cold, which can preserve nutrition to the maximum extent and play a role in lowering blood pressure. So celery is very suitable for cold dishes.