Brian, the creator of the River Bottom Fog Sauce line of NETs, has made what I consider a very honorable decision. He uses no additional flavorings in mixing RBFS juices. All the different flavors are provided by whatever single extract is used. This means that in his hybrid NETs---which is to say, natural tobacco eliquids that include other non-tobacco flavors, usually of a sweeter nature, such as caramel, vanilla, or whatever---he doesn't add either synthetic or natural flavorings during the final mixing. They are part of the macerated tobacco extract itself.
I don't know whether Brian seeks out tobacco blends to extract that are cased/topped with the extra flavors he wants, or if he adds flavorings to his macerations to infuse them. Either is possible. Adding flavorings to a maceration is perhaps not a common practice, but it's certainly not rare. If I remember correctly, Ahlusion does this, and other NET vendors may also.
What I've noticed about RBFS hybrids, however Brian may create them, is that the juices usually lead with the tobacco in terms of flavor profile. Any other non-tobacco flavors, and especially the sweeter, dessert flavors, are invariably subtle in RBFS NETs. At least this is true of the RBFS hybrids I have. I won't go so far as call the non-tobacco flavors muted, but they often take a back seat to tobacco in the overall flavor profile.
While I respect this decision, I don't always like it. For instance, in RBFS KillR Y4---Brian's version of an RY4---the caramel and vanilla are so mild that the RY4-ness of the liquid is diminished, to the point where it barely passes muster as a bonafide RY4. In that particular case, the flavors are not unbalanced---meaning too much tobacco and not enough caramel and vanilla---but rather the tobacco itself is downplayed to match the mildness of the non-tobacco flavors. As a result, KillR Y4 doesn't pop with flavor. Oh, it's still a lovely eliquid, but so laid back that it's almost asleep. I can't think of any other RY4 that's as understated and mild, and I've had more than a few RY4s.
Which brings me to Count Caramel, one of the recent additions to the RBFS line, and one that I haven't had. To my way of thinking, the logical comparison to Count Caramel would be Ahlusion Caramel Wild Wood. CWW happens to be one of my favorite retail eliquids of all time, and I know that numerous participants of this thread share my reverent affection for that juice. CWW is not your standard, run-of-the-mill caramel tobacco. What makes CWW so wonderful is the amazing caramel flavor that infuses the entire liquid. It's an almost miraculous hybrid where the natural tobacco augments the center-stage caramel, not the other way around, and yet it's not a TINO, for the tobacco shines right through. It's a unique and incredible caramel flavor made even better by the presence of a clean and tasty natural tobacco.
Personally, I would be thrilled if Count Caramel challenged Caramel Wild Wood or even topped it in scrumptiousness. Wow, that would be something! But I fear that what Count Caramel will deliver is either tobacco with a hint of caramel (the description on the VapingWatch product page even states this) or another KillR Y4, a vape that is pleasant but exceedingly mild overall.
I don't mean to take Brian to task---his NETs are all carefully crafted and of superb quality. But I like the non-tobacco flavors in my NET hybrids to be bold rather than subtle. You know, LARGE FONT rather than small font.
If anyone here has vaped RBFS Count Caramel, I'd appreciate knowing how it stacks up flavor-wise against Ahl Caramel Wild Wood.