2. Dry corn must be the kind of mature corn, which contains less water than fresh corn and is more resistant to cooking. The effect of dry corn must be fully boiled before it can be dissolved in water.

3. Fresh corn silk: 5 minutes.

4. Fresh corn contains more water, and its drug effect content is relatively lower than that of dry corn, but it contains more active nutrients. If you cook for too long, the nutrients will evaporate, and you can cook for about 5 minutes.

5. Who should not drink corn stigma water: people with low blood sugar: people with low blood sugar should not drink corn stigma water to some extent. Drinking corn stigma water for a long time may aggravate hypoglycemia symptoms, such as dizziness and fatigue. It is recommended that people with hypoglycemia try not to drink corn silk water.

6. Potassium-deficient people: it is not advisable to drink corn, which must have a certain diuretic effect. When the urine volume increases, some potassium ions in the body will also be discharged. If people who lack potassium drink it, symptoms of potassium deficiency may appear more frequently, such as dizziness, limb weakness, hand and foot cramps and so on.

7. People with low blood pressure: It is not advisable to drink the diuretic effect of corn silk. The discharged minerals are much higher than those supplemented by corn silk, which will change the osmotic pressure of human blood to a certain extent, thus lowering blood pressure. People with low blood pressure are advised to drink as little as possible.