I just tried my first attempt of using a UC. Did a single flavor run of regular 6% Ry4 tfa 70vg/30pg, 8 30min sessions with the heat that auto turns off at 140degrees and this tobacco juice smells and tastes absolutely awful, almost like moldy socks.
Do tobacco flavors not need that long of a steep. Ive heard people say ry4 tastes great at 3days-3months steep. There is definitely something in this process that ruined the juice. Beyond confused.
Have you used this particular concentrate before? Do you have a baseline with which to compare? Either fresh-mixed or aged in some other manner than UC? If not; how do you know what this flavor tastes like to you? Could it be possible that you just don't like the flavor (reviews for TFA-RY4(not Double) are quite varied; and "unpleasant" is repeated more than once).
From
TFA's website:
If you have used this concentrate before; how does your UC version differ from you previous efforts? What has changed? What is missing, or what is new?
Besides 8 30min. heated cycles; how was the liquid handled? Did you cycle it with container open or sealed (capped)? What type of container did you use in the UC? Did you do anything else to the liquid before, or after, UCing?
As the old idiom says; "the devil is in the details... "
This is just my opinion, and I am not a UC proponent (I did a few brief experiments; then abandoned), but 8 30min. heated cycles (4 hours total) seem extreme to me... at least without taste-testing along the process. If I had a simple RDA/dripper, and I was going to UC a new recipe; I think I would be inclined to vape a small amount between each cycle, so I can better understand how/if the recipe changes. And, when I may want to stop.