Well....I have RTS Blend Tobacco Absolute and SBE Brand Tobacco Flavor Commercial and I don't really know how to use them...they are both in 10ml bottles...anybody use these at all?
Any new flavor I get, I mix as a single flavor mix first, at 0.5-6% depending on expectation of how strong the flavor. Both those 3% or less. I drip, so can try mixing together those flavor mixes right in my RDA on the fly. If something's too strong, drip some unflavored. Can mix straight into a tank too, the essential thing when mixing on the fly is they're already mixed with base, fully vapable ejuices by that point, so can't really do any wrong except get an odd flavor; just like mixing premades together which I've done since day 1. Based on this experience, I go on to try multi-flavor mixes directly.
1 drop flavor per mL of base is about 2.5%. Be especially sure to shake well the flavoring with extracts like TA, which can seperate.
I have Inawera TA Garuda, which is not what you would expect in flavor. Sweet, sour/citrus, grassy, deep complexity also but hard to detect that in the small amounts used, which is limited by the dominant notes.