Think of steeping as the same as making a big pot of stew or chili. It's ok the first time but when the flavors have a chance to blend together then they are wonderful. Let em sit and blend together for a while.
My sentiments exactly!
There are some sites that specifically state that you should or must step the blends.
From a non-forum supplier's website that I purchase blends from frequently:
Larger Bottles need shaking! larger bottles do not have a lot of extra room for mixing in the bottle as our other sizes do. They do require extra shaking and extra time to steep. With 100% VG E-Liquid, they are very thick and will mix slowly when shook.)
You can "speed up" the stepping process. Seal the bottle tightly and air free in a zip lock bag, then seal it in another (tightly sealed and air free also). If they are not sealed completely the ink on the label might bleed, making it unreadable. Place the bottle in hot tap water for 10-15 minutes. This will allow for better mixing when shaking. This process can be repeated as much as needed to completely blend your e-liquid.
When a mixologist makes special blends on a per order basis, I have found that when I go to vape the liquid it is very bland and some are even tasteless. By letting a blend step for at least 1 week, I can go back to the blend and begin to enjoy the flavor that it is intended to be.
My rule of thumb from this vendor is: STEP FOR 4 WEEKS!! I get the most flavor from this vendor when I order it, put it in the pantry and let it step for 4 weeks. Every day to every other day, I open it up and shake the bottles vigorously.
You have to remember the flavor compounds are not always pure flavors from the original source. Many of them are polyethers (chemicals) that resemble an original flavor.
For more information on flavors ands artifical flavor compounds, there's a PDF document from the
University Of Ohio. You don't have to study the entire document, but by looking at the table of contents, I hope you'll appreciate the complexity of creating compound flavors.
Enjoy!