I am not sure what kind of pressing you did, did you heat it to the point where you turned it to black hash, which does have a different taste(I usually only do that when I’m working with dry Kief, for instance-after done making bubble hash I dried the used weed on large cardboard PCs & when dry I use it again for lower quality dry sift, I am always amazed how much more Keith is still there, Then put it in a press and put the press in 190° water
Pull the keif out and roll it with a large dough roller— then back to the press again and heated & done black hash !)
Bubble hash, like you I spread out on 25 µm screen NOT CLUMPS, but flat 1/8” or so & Press with paper towels & then place screens with kief on my bud drying rack & Cover gently with parchment paper (just to prevent dust) & dry in dark cool area. But again, I’ve pressed as much water out of it as I could. As long as air can circulate around the top and bottom I personally have never had a mold problem… after drying five or six days I will place kief in parchment packets, put them in my bamboo Asian Steemer after I have created steam and let them sit in there for about 45 seconds to one minute.
Then pull out and roll them with a large roller of any kind doesn’t have to be heated… releaseing all those wonderful Terps & oils…I will roll for probably 5 to 7 minutes… depends on quantity… now I will start to work the keif in my hands, And finally into a log & then compress log into rough HASH ball shape and start rolling away next 20-30 minutes
.
((if you have no interest in making balls, simply put your rolled Keif into a press tube, box etc no more heat needs to be applied))
Freezer, i’ve never had a problem with storing herb or hash in the freezer if it’s properly sealed in a mason jar (prevent moisture release) & I usually vacuum pack first, then jar, if I know I can’t use it up over the next year which is usually the case…!!!
Although herb and Hash have most of the moisture removed, you still have some in any product with proper curing. Not enough for mold, but flavor sustainment. You want to preserve this when freezing.
Also, my herb & Hash will cure in dark cool area for Herb-4 months or so & Hash up to one year before freezer time.
But, that’s me everyone has different practices