Steeping changes

[smurfdude]

I have mixed up some liquid using menthol and cool mint.
Originally after a week I had to just have a bit of a taste to see as you do and it tasted nice.
Now after a couple of weeks of shaking and leaving it to breathe the juice has changed colour as I expected and gone from clear to a rose colour. Now the juice has developed a perfume scent to it and tastes horrible!!! I mixed up the juice on the 12th May so has had approx 2 weeks to steep.

Any ideas/advice?

The mix is a 11mg nic/4% menthol/8% cool mint/60/40 pg/vg

 

[MD_Boater]

I would try it again at 2% menthol (which still seems too high to me, BTW) and 4% cool mint and see if it tastes better.

You could make up some unflavored 11 mg base and cut the current batch in half to see if it helps...

 

[Pragma]

gone from clear to a rose colour. Now the juice has developed a perfume scent to it and tastes horrible!!!

Two words for you my friend: nicotine oxidation.
I'd advise against the breathing technique for your juices and against shaking them too much. Just let them sit in the dark w/ closed cap.
As time goes by through steeping, shaking the bottle gets less and less useful.

Any ideas/advice?

Not sure, because I don't cook mint/menthol juices. With tobacco juices, which have to steep a looong time, it's common to correct the harsh taste inherent to oxidized nicotine with a little vanillin. I don't know if it's adequate for mint juices.