Refrigerator storage: the low temperature in the refrigerator can prolong the storage time of purple potatoes, and raw purple potatoes can be stored in the refrigerator for several months. If it is cooked purple potato, it can't be stored in the refrigerator for a long time, and the storage time generally can't exceed 3 days. Dried potato: cut off the inedible part of purple potato, cook it in a pressure cooker, cool it, take it out and slice it, and put it in a ventilated and sunny place to dry.

1, method 1, refrigerator preservation. The low temperature in the refrigerator can prolong the storage time of purple potatoes. Under normal circumstances, raw purple potatoes can be kept in the refrigerator for several months. If it is cooked purple potato, it can't be stored in the refrigerator for a long time, and the storage time can't generally exceed 3 days. So it is best to eat it immediately after cooking.

2. Method 2: Make dried potatoes. Cut off the inedible part of purple sweet potato, cook it in a pressure cooker, cool it, take it out and slice it, and put it in a ventilated and sunny place to dry.

3, method 3, drying. If there is more water on the raw purple potato, be sure to wipe it off and put it in a sunny place to remove the excess water. Too much water will lead to problems such as purple potato corruption. Remove excess water and store it in a cool and ventilated place.

4, method 4, cellar method. Soak the purple potato with 70% 1000 times of Tobuzin solution and disinfect the cellar, then put the purple potato into the cellar. The temperature of the wine cellar is kept between 10 and 15 degrees. This method can be used to preserve a large number of purple potatoes.