1, rotten ginger can't be eaten: some ginger only looks moldy or rotten on the surface, but the whole piece of moldy ginger contains mycotoxin. Once ginger is moldy and rotten, it will produce highly toxic substances. Excessive or long-term consumption will lead to degeneration or necrosis of liver cells, and even develop into esophageal cancer and liver cancer. So the moldy ginger must be thrown away.

2. Wind-heat cold and summer-heat cold can't use ginger: Ginger brown sugar water is suitable for wind-cold cold cold, and can also treat fever and chills after rain. Ginger cannot be used to treat summer colds, wind-heat colds and heatstroke. Ginger juice can treat vomiting caused by cold, but it has no effect on vomiting caused by other factors.

3, it is not appropriate to eat ginger at night: as the saying goes, eat ginger and eat arsenic at night. Nourishing yin at night, ginger rising yang, will violate the natural health of human body. Ginger can enhance and accelerate blood circulation, promote food digestion and antibacterial. Eating ginger in the morning is really good for your health. Ginger fever will cause the body to get angry, and it will also excite the brain nerves and affect the quality of sleep.

4, germinated ginger can not be eaten: once ginger is found to germinate, it must be thrown away, so as not to cause great harm to the body. Generally, ginger is dug when it stops growing, and stopping growing is only temporary. If the purchased ginger is not properly preserved, it will promote the secondary growth of ginger, and even the ginger will grow into buds. The tender-bud ginger will consume the original nutrients of ginger, and at the same time it will rot and reduce its nutritional value. In addition, the sprouted ginger also contains toxic substances, which will have different effects on the liver and kidneys.

5, try not to eat without skin: try not to peel ginger, so as to ensure that ginger plays an overall role. But be careful not to peel the ginger and rinse it carefully.