Can someone give me an overview of the steeping process?
Is it necessary?
How long do I steep?
Is it only if mixing my own juices or do all juices have a steeping time?
Can you steep for too long?
Thanks!
> Is it necessary?
Depends on flavour, but basicly yes.
> How long do I steep?
Depends. Some flavours require overnight steeping, some - one month and more
> Is it only if mixing my own juices or do all juices have a steeping time?
Do you think they use different components to produce "industrial" liquids?
The liquids from vape-shop usually are stocked for some time by the seller\maker, it adds to steeping process.
> Can you steep for too long?
Ad nauseam
In reality depends on many factors - some flavourings may introduce some bad or reduced flavour over the time, some not. Nicotine is prone to oxidise is there is enough air in the bottle. And so on and so on - practice more to make your own decisions.
Most interesting part
> an overview of the steeping process
I assume you are not good with chemistry, right?
I'll try then to describe it in quite simple way.
The molecules of a solvent - PG or VG - tend to form large conglomerates - several molecules stick to each other.
When initially you add flavouring to the solution and mix it, the mix looks like microdrops of the flavouring surrounded by these huge guys - solvent conglomerates.
Over the time the mixture becomes more homogeneous - smaller portions of flavouring surrounded by smaller conglomerates of PG.
What's wrong with the initial mix?
Well, that's where the chemistry and biology meet each other
The sensors on your taste buds are specialised molecules, trained to recognise specific substances. When the flavour molecule is enclosed in a huge bubble of PG molecules, it just cannot reach the sensor, poor thing.
When it has less guards, it has more chances to reach the target.
It's a bit more complicated in reality, but the overall picture is pretty much like this.