1. After the yam that is temporarily inedible is cut or broken, the incision should be soaked in rice wine first, and then dried with a hair dryer to promote wound healing. After being wrapped in a napkin, it is surrounded by several layers of newspapers and can be stored in a cool corner for several months.

2, diced: After the yam is cut, it is also a good choice to cut the yam. Yam can be peeled and cut into pieces, then packed in plastic bags according to the approximate consumption each time, and then frozen in a freezer drawer. You don't need to thaw when eating, just boil the water to ensure that the nutrients of yam are not lost. This method can be kept for about a week.

3. Balcony drying: If it is home-grown yam, the freshly dug yam is generally steaming and the surface will be slightly wet. If the yam is cut, it can't be placed directly in the shade, so if it is to be preserved, it needs to be dried on the balcony before being put away, but it must not be exposed to direct sunlight or baked. Then eat yam with incision first.