Not sure about Super cure but the cure I get from the butcher supply place has a 6 month shelf life. I have had an instance of cure going bad from age so it is just something you may want to check. For anyone in the Sarnia/London area there is a place called Canadian Butcher Supply in Thedford and they have all the spice, case, cure you need and some kick azz equipment at reasonable prices. Have a 20lb air operated stuffer on my wish list, to make smaller sausage much easier, but a $600 I will be hand cranking for a while