If you put it in the freezer you may lose some of the THC because you wont allow time for all the water to seperate from the butter.
On a side note Hash - you can freeze regular butter or even to store it for over a year in a freezer and it will still be good. I would imagine that you could store cannabutter for a time in the freezer but i wouldnt say how long cuz I would be guessing.
MRS MV...
