What’s your Steeping methods? Except for the occasional shake and leave
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Here’s the method I use on everything besides MF flavors. Once it’s complete I store it 2-4 weeks.
Definitely a huge fan of ultrasonic. But I will add that the machine choice is important, if not critical.
The one that I have/use is an old holdover from jewelery work and is branded as OroGem (who I learned only recently had to rename to GemOro thanks assuming to a diamond broker using the same name - even though they were in a foreign country, it was industry related, so I can see “the courtesy” of changing the name).
Anyways, the key is it only heats up to about 110F (with just heat, and after a couple hours of being on), and reaches an upper limit of 118F with the ultrasonic waves engaged, even after up to 5 hours of “constant” use (giving it 15-30 minute breaks between 1hr cycles).
I firmly believe this is why I don’t experience the Nicotine degradation that some report when using an ultrasonic. Some heat up to 150F, and I think that while those make the steeping process faster for flavoring, it’s detrimental if you add the nic to the mix before heating (as I do) at that temperature. Even still, it’s been anecdotally tested with results that showed only a 1mg loss of nic (they used 6mg) at 150 (by some on reddit). So that could theoretically be adjusted for if so desired. However, even as anal as I am about measurements (syringes) and temp use in the UC, I’m not worried about it since my temps will never get that high.
Most of my non cream/custard flavors are good to go within 24-48hrs after running between 3-5 hours in the UC. Those that do use custard are generally good within 4-5 days max. And I’m still sorting out the few creams I have, but so far it looks like those might need a week to two weeks of time after the heat bath.
Coffee is the exception to the above though, and will definitely still take 2-3 weeks to fully come into their own (referring strictly to true coffee flavors here. Not all the mocha and cappuccino offshoot crap as those are still good to go within 24hrs.)
I wouldn’t trade my UC for the world at this point.
Edit: Ugh. Just noticed I replied to Pro rather than the thread in general. My bad.