Complex sentence: Canning provides a shelf life typically ranging from one to five years, although under specific circumstances a freeze-dried canned product, such as canned dried lentils, could last as long as 30 years in an edible state.
Split into simpler sentences: Canning provides a shelf life typically ranging from one to five years, although under specific circumstances it can be much longer. A freeze-dried canned product, such as canned dried lentils, could last as long as 30 years in an edible state.