man im glad you asked, youll find tutorials everywhere but youll notice the hash they end up with its usually very very dark and in rock form with lots of moisture, this is because of two things;
over agitation breaks down plant matter and taking too long to in the cold water the plant cells start to rupture releasing super small particles full of chlorophyll, the second reason hash turn out shitty its because most people dont even know how to dry it, ive tried telling everyone here including farmbuck and toker1 the right was to dry but no one has tried it.
imagine a thick kief that clumps up as you press it and warm with your fingers, a full melt kief that bubbles as you burn it, just the sexiest hash youll ever see. now to the specifics, as soon as you get the hash patties from the bags into your pressing screen put right back into the freezer, dont press much the patties, the water will come handy in the future, now you gotta get a big cardboard, and a box to put it in, or a drawer or somewhere dry protected from dust, and youll need a micro plane like this
https://www.microplane-brandshop.com/Microplane-Fine-Grater-Master-Series
now you gotta put the patties into the freezer only for a few hours (not days) because the freezer takes the moisture out of the hash, nos using the micro plane take the frozen paties and grate to dust all over the cardboard making sure it doesnt clump all together in one spot, very well spread, the moisture helps because the trichomes are "suspended" in the ice structure, otherwise they break when in contact with the micro plane, then just leave to dry for 7 to 10 days like i said in a box or a drawer or somewhere protected from dust.
oce dried take a plastic card and scrape all the goodnes together and place into a container in a dry cold place, if you place in a hot place it will melt into a block and you dont want that, you want full melt. now i didnt came up with this, i watched bubble man(bubble bags owner) explain his technique and the end product its just superior, its like bone/coral colored kieff, not those cluncky hash rocks with black and green spots all over. man im going to upload a video to youtube of me smoking on a pipe so you see what a freaking beauty.
i wouldnt be wasting my time writing all of this if i wasnt so sadden when i see my fellow GWE family smoking some shitty hash that burns like incense instead of wax
just watch this
https://youtu.be/sk9BI0-7A2o?t=2021 youll see the macros of the trichomes and how its suposed to look