ok guys, quick update.
I added another 1% koolada and i still didnt feel the coolness i wanted.
I added another percent so i got to a total of 3% and still nothing.
I have let it steep for a night with the cap open and today I almost burned my lungs. (stupid i know)
So for me, it seems letting the juice steep for a good day or 2 and making sure you let some oxigen do its work, will do the trick!
I am curious about what finished PG/VG ratio you are mixing to? If it is a high/max VG ratio, I could see extra time required to permit complete blending.
I am also stymied by why there would be any benefit gained from allowing this to breathe (off-gas). Most often this only benefits flavor concentrates containing ethyl alcohol (and TFA Koolada contains no alcohol). Unnecessary exposure to open air, or even excessive head-space, can cause unwanted loss of flavor. Highly aromatic flavors are particularly susceptible to this. Note: I am
not saying that you are suffering flavor loss with Koolada. Only that, unless there is an unwanted harshness or chemical-like off taste, venting a fresh recipe
can cause more harm than good. In
my opinion; this is a practice, like heat, that should be understood, and thought twice about how it might help the recipe vs. hurt the recipe, before applying.
The next time you need to mix some up, if you have enough spare containers; I would be interested in seeing you mix up whatever batch size you need, shake it up, and then divide it into two equal containers. Then let one (half) breathe, as you did in your in your initial experiment, and leave the other container closed. If I were a gambling man (I'm not; I'm to stingy for that

) I would bet that you won't notice much, if any, difference. After the experiment is over, you can recombine the two, and reclaim the extra bottle.
As a side note; this is what I do anytime I am trying any new technique. I treat only half in the new manner, and leave half alone, so it can act as my control group. That way I can see what, of any difference it makes. It also helps to make only one change at a time, as this makes it much easier to say "this" does (or doesn't) do "that."
