First of all, a HUGE thank-you to Ace777 for finding the PERFECT caramel & butterscotch. We didn't have either, but ordered them both to give this one a try. (Long before we changed our diet to strictly organic, and 'no whites', Werther's was my favorite candy; neither of us have had a Werther's in, idunno, like 7-8 years).
Here's the short version:
We used the exact flavor brands; we cut the flavor percentages by 50% and the EM by 75%. We made it with our standard VG base (vg, distilled water; saline solution & pga) at 10% nic; steeped it thoroughly. Compared to actual Werther's candy, the flavor profile is spot on! However, it is far sweeter & more intensely flavored than the real thing (kinda like taking the sweeteness & flavor from 4-5 Werther's and packing it into one). Since EM significantly reduces flavor (and we left almost all of it out), and saline tends to 'pop' flavors - there's no way we can guess at the overall intensity of the original.
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Long version; details that will hopefully assist others to exactly replicate Werther's...
We read the thread, and decided to go with 50% of the original flavoring level. But before we halved the percentages, we halved the EM first. Reasoning...
--EM thickens & smooths rough edges - something that's unneeded to us using caramel, butterscotch & cream
--In order for EM to add sweetness, it has to be sweeter than what it's being added to...so by being less sweet than the flavors, it would lessen sweetness here
--EM kills flavor intensity, in a major way - didn't want any of that happening
--EM also has the ability to temporarily kill taste buds. If we vape anything with more than .5% EM, our taste buds are dulled (or deaded, depending upon strength) for around 4 hours.
Our mix was:
Caramel Candy OoO 5%
Butterscotch FW 5%
Sweet Cream TFA 1%
EM .5%
Vanillin .5%
We mixed it with our VG-base ( 80% VG; 9% dillstilled water; 9% saline solution .9%; 2% pga - premixed, and used as VG) @ 10 mg/ml nic (NN).
'Smelled it right after measuring & shaking. WHOA, that is "spot on Werther's!"...but it seems pretty intense - even at 50% off.
It got 2 hours in a heated ultrasonic; 2 hours at 150 degrees (shaken & uncapped occasionally); we tasted a 10-20 drops each in a 306 drip atty

banana: but seems like it's going to be 'way too much flavor') , and then it sat on the shelf for a week.
One week later - time for the tank-test! Davide Mini-glassomizer with our build coil/head (32g Kanthal A1, two wires twisted together, annealed, 5 wraps around Nextel = 1.8 resistance - voltage adjusted for a 6.8 - 7.2 watt vape).
Thank the vape gods & Ace777 - this IS Werther's! But wow, we agree we can't remember Werther's being this sweet and intensely flavored - but hey, after nearly 10 years with virtually no white sugar, we're sure our taste buds can't possibly handle "candy anything" without being totally overwhelmed & flustered. After about 15 minutes, we had to put it down...it was just "too much" flavor & sweetness (not to mention the dreaded 'custard notes' in most vendor caramels, creams & butterscotches). Tasting the taste of Werther's again at any intensity? PRICELESS!
Next day - goin' to the grossery store to pick up a few things, so I grab my ADV, and pop the Werther's tank on another battery (thinkin' this'll go great with my ADV
http://www.e-cigarette-forum.com/forum/e-liquid-recipes/494013-we2rcools-dulce-fuego-very-simple-very-good-tobacco-type-vape.html when I want a couple of hits of something more intense)...and off we go. We rounded the corner of an aisle, and there they were... bags of Werther's staring us right in the face. Oh no, oh yes, oh no...justification...we can't do it for us, but we can do it for ECF and sake of hundreds of vaper-Werther's-lovers. I mean, with our taste-buddies having forgotten most of what they ever knew about white sugar candy, we can't fairly review this mix without this, right? We'll just have 'take one for the team'! ( :::grinning::: )
Back in the van we pop the Werthers (I chew mine really fast), take a big drink of water, and hit the Werther's tank. WHAAAA? Could this be? The juice is MUCH sweeter and more intense than the candy itself! And then I pass off, and the other half agrees (with the candy still in his mouth).
He hands back to me. Huh? what is that bite-zingy thing in the juice that's not 'candy'? It's more of a sensation than an actual taste, but it is kinda-maybe a taste. Could it be the salt in the saline solution? (Neither of us has EVER been able to taste/feel it before). But we both agree, that's what it must be...and maybe somehow the sugar in the Werther's caused us to be able to taste/feel it. (???) Or the Nextel wicking and we've not yet noticed it (???) Grrrr, the variables!
--> We recently switched to Nextel (aka "Ready Wick" available here:
READYxWICK) for wicking instead of typical silica, and it's crazy how much more flavorful the juices are with the Nextel. The Nextel is known for adding NO flavor to juices, and also for wicking substantial amounts of juice quickly. That equals more vape = more flavor.
So back at home, we dig out a couple of coil/heads with standard silica wicks, and try those with our Werther's juice. WOW, this is just crazy. The wee-tiny-salt-zing-bite-thingy is
totally gone, and the sweetness has intesified a bit - it's now like vaping a tank of ultra-strength Werther's corn syrup.
And that concludes our lengthy notes & review. Thanks again to Ace777 for nailing down the flavors!