1 The next step is to rehydrate the nematodes, for which you will require at least 1-2 gallons of water. 2  Empty the bucket of nematodes into the water sprayer and allow them to soak well for an hour.
Once it is cool to the touch, ladle it in to the freezer containers, leaving 1/2 inch head space in each one. Seal the containers and place in the freezer. Store the apple butter safely in the freezer for several months, up to a year. Once it is thawed out, keep it in the refrigerator for up to three weeks. It will probably be OK after three weeks, but it is best to discard it if it has not been used after a month.
Butter will generally last for about one month after the sell-by date on the package, assuming it has been continuously refrigerated. How long can butter be left out at room temperature? Butter may be kept at room temperature for 1 to 2 days, but it will begin to spoil rapidly if not refrigerated after that. To further extend the shelf life of butter, freeze it: to freeze butter, wrap tightly in heavy-duty aluminum foil or plastic freezer wrap, or place inside a heavy-duty freezer bag.