Sorry to necro an old post, but for anyone looking for some tips to freshen up old, dryed out hash, here's what I do:
My guy sometimes has some old dryed up hash for sale for a pretty low price and i sometimes buy a couple of grams when I'm a little strapped for cash. Over time I found a pretty decent method to get it nice, pliable and sticky again:
1. Coat the hash in water ( it will repell water somewhat, but just coat it with your fingers) - not too much, you don't want it dripping wet, just coated
2. Wrap the slightly wet hash in waterproof plastic ( a good ziplock bag or the corner of a garbage bag works pretty well), make sure there are no tears or holes!!!
3. Submerge the plastic wrapped hash in 60 -70° (Celsius) water for 3 - 5 minutes
4. Take it out, dry the bag, remove hash and start kneading it thoroughly (it will be quiet soft)
5. Let it cool down and test its' pliability
6. If it's still too hard / dry, repeat step 1 - 5 (depends on how old your hash is)
7. I usually keep it wrapped in plastic overnight, so the moisture can really get into the hashs plant material without evaporating
With this method I was able to freshen up really, really old and dry hashish to the point where it felt like it was made yesterday. The logic behind it is this:
Most of you probably know that hashish still has a lot of plant material in it's content. Because of that, fresh hashish still hast al lot of moisture in it. Not the 60 % watercontent of weed, but it still hovers around 30 -40 %. When hashish gets old, that moisture content evaporates and the remaining oils harden. the hardened oils can simply be made pliable again by heat and kneading, but refreshing the moisture content really does the trick.
Hope this helps!