Thank you. The shelf life of dried sweet potatoes varies greatly depending on the climate and the degree of drying, so it is difficult to say. At my house, we make them in December and they can be stored until around March. If you are worried, put them in the refrigerator and eat them as soon as possible. ありがとうございます。干し芋の保存期間は、気候や干し加減によって大きく変わりますので、一概には言えません。うちでは、12月に作って3月頃までは保存できています。心配でしたら冷蔵庫に入れて早めに食べてください。