[DemforBush]

I’ve not used it (honestly never heard of it before now), but here is a website that gives its history and how they manage to dehydrate it:

https://www.usaemergencysupply.com/information_center/butter_powder.htm#.UxDn287hfqg

[steve86]

We have all those dried products in #10 cans — my wife will know what to do if/when the time comes. She grew up making do in a very poor third-world country and this stuff is a luxury.