Reply #15: If it's a 2 pound block from Costco, I divide it

[Warpy]

and wrap it in plastic, then put it into a freezer bag with as much air squeezed out as I can manage.

The wrapped butter sticks I just store as is, in the box. That's what I bought a ton of just before dairy prices went insane.

The reason I try to squeeze all the air out is that it will go rancid over time even frozen if it is exposed to oxygen. Commercial butter is adequately wrapped for storage over a year or less, although the stuff I'm using now is over 2 years old with no noticeable loss of quality.