The rest of my flavorings come today and thanks to the E Juice Me Up Calculator I have got several sample recipes Im gonna try out. Still trying to figure out how MBV measure out their parts like the Create You Own feature. I asked but it is a trade secret which I can understand them not wanting that info to get out.
BUT if anybody here has any ideas of how it can be done it would be most appreciated!
This is hypothesis only - I haven't tried any of it. However, this is what I *suspect* will get you close. Before we get into the math, let's look at the broader picture; the sheer number of flavors MBV carries. There's simply no practical way to have an entirely different formula for flavor percentage depending on the flavor of juice in question - it would take too long to fill orders fresh if every time a flavor was ordered, the employees had to look up what the formula was for that particular flavor out of 250+.
Further evidence for that theory (and it is only a theory) lies in the MBV specialty flavors (which you can't buy just the flavoring for, they come in juice only). It stands to reason that these are flavorings that have been "pre-combined" by MBV with a little extra finesse, so any nonstandard percentage amounts used in the actual creation of the flavor become "standard" percentage amounts once the mix is done.
To illustrate what I mean, let's say for the sake of argument that Flavor X by MBV is a combination of 10% Flavor A, 5% Flavor B, 7% Flavor C, 30% Flavor D, and 48% Flavor E. That would be difficult to mix to order every time... there's several fractions of mls involved. But if they mix up that flavor combination into a large batch, so they have 100% of New Flavor X, then employees can just add that flavoring to juice at a standard percentage without having to measure out the individual flavorings that make up Flavor X.... bringing us right back to the idea that "the actual percentage of *total* flavoring MBV uses across juices is standardized, not individualized per flavor."
That would also explain why some flavors are weaker or stronger than others... some are simply better with a higher or lower percentage of flavoring, but MBV does such a high volume of orders that it makes more sense for them to standardize flavoring percentage across the board and then offer flavor shots.
So, assuming this theory is correct - that juices without flavor shots are mixed at a single standard flavor percentage, regardless of the flavor - how do we find what that number is?
There's absolutely no way to know this without testing it out (just like I could be entirely wrong about there being one standardized flavor percentage for MBV juices). And I haven't actually tested this, so I could be wrong.
But let's take what we do know and see what we get.
A 15 ml bottle is allowed to have 6 parts. MBV recommends their flavoring be mixed somewhere between 15 and 20%.
So what's 15 (total percent of flavoring) divided by 6 parts? 2.5%
If each "part" is an even amount of flavoring (which it should be), and the total amount of flavoring is 15%, then each individual part has 2.5% flavoring.
You'll probably have to tinker with this... if nothing else, because it's all supposition on my part. But that's where I'd start.
(Edited to add): I should clarify that I wouldn't actually mix any flavor at 15% for a first bottle. As with cooking, you can always add more, but you can't take it out! I'd start at 10 or 12% and move up from there as necessary. Just wanted to demonstrate how the math works.