Ginger will produce a certain amount of chlorophyll under the action of sunlight, which is harmless to human body after eating. This kind of green due to sunlight can be safely eaten, while the rotten green ginger cannot be eaten and must be thrown away in one piece.

Ginger preservation method:

1, the first method is to pack it in cans or bags. You can put a proper amount of fresh ginger in paper bags or plastic bags (food bags). Stored at 1 1 ~ 14℃. You can also wash and dry fresh ginger and put it in a salt pan for a long time.

2. The second method is sand wet method. First, choose a large piece of fresh ginger with no skin damage and thick stems, remove the budding part, and bury it in wet but not wet fine sand or loess (soil contained in flowerpots and washbasins) for a long time. It won't be killed. But pay attention to antifreeze in winter and avoid direct sunlight in summer.

3, the third method is medicine, cotton method. First, choose a large-mouthed bottle with a lid, put a small piece of cotton wool with water at the bottom of the bottle (too much water is not advisable, and too much ginger will be soaked), then put the remaining fresh ginger on the cotton wool and cover the bottle cap. This method can be used at any time and is very convenient.