Ah, the dreaded sour bakery surprise!
Yep, it happens. Some cream and bakery flavors can go through a weird phase where they taste sour, off, or just plain wrong if they haven’t steeped properly. It’s like biting into an unripe banana—you know it should be good, but instead, it’s an insult to your taste buds.
Why This Happens:
Dairy Notes Need Time – Creams and custards often contain compounds that can taste sour or plasticky until they’ve had time to meld properly. Steeping lets them mellow out.
Bakery Bases Can Be Harsh – Some bakery flavors (especially those with acetyl pyrazine) can be dry or bitter at first, making them seem weirdly sharp.
Heat & Nicotine Reaction – If you’re using freebase nicotine, it can sometimes interact with certain flavors in odd ways, especially in fresh mixes. Higher temps can make the sourness more pronounced.
Some Flavors Are Just Manky Before Steeping
If you used Whipped Cream (SSA), for example, don’t panic! That stuff is absolutely foul straight off the shake. I nearly dumped a whole bottle of juice the first time I tried it—thought I had mixed up a bottle of regret. But after a good 7-day steep, it transforms into one of the smoothest, richest creams I’ve ever used.
Other offenders? Some custards, certain vanilla-heavy creams, and even a few butterscotch flavors can go through a weird phase before they settle in.
How to Fix It:
Steep It! – Give it a solid one to two weeks. Shake it up occasionally and let it breathe for a few hours if it smells funky.
Try a Warm Bath – Some mixers swear by gently warming the bottle (like in a bowl of warm water) to speed up the steep.
Adjust Your Ratios – If the sourness persists, you might have too much of one ingredient overpowering the mix. Try dialing back the creams slightly.
Check Your Tank/Wick – Sometimes, a dirty coil or old cotton can mutate a flavor into something tragic. Swap them out and see if the problem persists.
The Good News?
If your mix was delicious before, odds are it will be delicious again—just needs a little patience. Give it time, revisit it, and let your taste buds be the judge.
Let me know if you need more help—always happy to troubleshoot! 
