Yeah man... crazy you can use all the parts of the plant. Native American style.
Anything will make hash, but the stuff with all the crystals on it make the best/ most.
Same with butter, the frostier the stuff you put in the stronger the butter. I only used the fan leaves and stems for the butter and it still turned out good.
For my butter I just put Margarine in a crock pot with my stems/leaves and put on high for 8 hours. Not the best method, but it worked. Here is a better one:
https://www.rollitup.org/cooking-cannabis/26105-strongest-canna-butter.html
And here is how I made hash:
[youtube]neOVTsNr_D8[/youtube]