The most recommended method for storing raw cut sweet potatoes both long and short-term which can last anywhere between a week to up to 2 months.
Frozen raw sweet potatoes can last anywhere from six months up to a year in a deep freezer, but I would consider that pushing the limits! Eat it sooner than later.
With this storage method, the raw cut sweet potatoes can last between 24 hours and up to a few days – but no more than that.
Once you’ve freeze-dried your sweet potatoes, test them for moisture and then seal them in a Mylar bag (with an oxygen absorber) for up to 25 years. Note - this does require that you have a freeze dryer!
An additional tip for selecting the best sweet potatoes to store is to choose those that are newly harvested and still have the roots attached.