Specs: The 30ml bottle of River Bottom Fog Sauce KillR Y4 sent to me for free by Brian through VapingWatch contains a medium-caramel-colored liquid with a slight but pleasing nose mixed at 16mg nic in either a 60/40 or 40/60 PG/VG base (I can’t remember which). I didn’t steep the juice very long because RBFS juices are supposed to be steeped for three weeks before sale. Testing was done in my old-school way, by dripping the liquid into a standard JoyeTech 2.2 ohm 510 atomizer powered by a VAMO v3 set to 9 watts RMS. I also loaded the juice into a CE2 Ultimate Clearomizer, which is now antiquated technology, but still the JDS I use to test-compare RY4s head-to-head, since about 80 of my 160 RY4s are loaded into those particular clearos.
From the VapingWatch product page description:
“A mixture of mainly burley and Cavendish with a sprinkling of Virginia, [KillR Y4] is cased with flavorings closely mirroring an RY4. Without a doubt the sweetest Fog Sauce in the line-up. Both the taste and the aroma are in that sweet spot of pastry, cotton candy, maple syrup and molasses, making it easy to recommend this as a perfect dessert vape. KillrY4 would be perfect for someone looking to try Naturally Extracted Tobacco for the 1st time.”
I presume that Brian put together his own tobacco blend and infused the other flavorings. But maybe not. If a commercial blend was used, I’d sure like to know what it is, although asking would be impolite.
KillR Y4 is a NET-based RY4, which is to say an RY4 that uses natural tobacco extract flavoring rather than synthetic, lab-based tobacco flavor. That makes it, by definition, a Custom (rather than Classic) RY4, whose main competition comes from four other NET-based Custom retail RY4s---VapeRite VR4, GoodEJuice GJ4, MountainOakVapors Full Virginia Flake RY4, and QuickNicJuice ouR whY qu4tro. I’d include Rogue RY4 from MyVapeJuice as the fifth, but Diane doesn’t seem to offer Rogue RY4 any more. Other NET-based retail Custom RY4s are available, but the four I listed are deservedly the most popular and well-known.
[Note: I’m not including Want2Vape RY4, since I have the DIY version made from w2v’s all-in-one flavoring, and I’m also not including RY4s that use Tobacco Absolute in the group (Mom&PopVaporShop RY4 and RY4v2, Moondrop RY42, and others), because TA has its own eccentric flavor profile, and TA-based RY4s taste decidedly different than NET-based RY4s.]
The tobacco element of Classic RY4s is effectively “hidden”---neutral synthetic tobacco provides a base flavor, which is then merged with caramel, vanilla, and sometimes other flavors, into a single unified taste. Custom RY4s separate the flavors and highlight their individual tastes. NET-based RY4s add the additional element of authentic tobacco flavor, which often leads. GeJ GJ4 makes tobacco the star, backed by assistance from caramel and vanilla that are present but not quite center-stage. GJ4 is clearly the most tobacco-dominant of the top-tier NET group (and the least RY4-like), followed by MOV FVF RY4, which is better balanced, then QnJ ouR whY qu4tro, which is both balanced and assertive in all its flavors. RBFS KillR Y4 has the least tobacco presence of any NET-based RY4 I’ve vaped. Oh, it’s there, but it’s not strong. KillR Y4 reminds me of RBFS Pirate’s Drunken Sweet Tooth, except with even more sweetness of a type that---as the description states---“mirrors an RY4.”
On my first draw of KillR Y4, my brain whispered three words: “Sweet, very sweet.” Is it dessert sweet? Yes, definitely. Pastry? Maple syrup? Molasses? I can’t discern any particular kind of sweetness, except that the sweet flavors---whatever they happen to be---are soft, expansive, and close enough to caramel-vanilla to qualify this juice as an RY4. In overall flavor profile, I’d put KillR Y4 midway between the rich caramel of VapeRite VR4 and the even-tempered tobacco/caramel/vanilla of QuickNic ouR whY qu4tro.
Would KillR Y4 be better with a stronger tobacco presence? For me, the answer is yes, but I understand that a change in the balance can alter a juice like this in unexpected ways. Perhaps Brian’s stated target audience of “someone looking to try Naturally Extracted Tobacco for the 1st time” is a savvy marketing decision.
Will NET veterans or those who love unadorned tobacco flavors enjoy KillR Y4? Perhaps, but only for about five minutes. In addition, RY4 aficionados who lean away from sweet, dessert-style RY4s can look elsewhere. Move on. Nothing here to see.
For dessert RY4 lovers who want a natural tobacco presence that doesn’t overwhelm or compete with the sweetness, KillR Y4 could be the answer to their prayers. Also, anyone who likes sweet juices in general would be well advised to give KillR Y4 a try.
I’m interested to see how time affects KillR Y4. Will steeping diminish the sweetness somewhat? Will it bring the tobacco forward more? VR4 and ouR whY qu4tro are best fresh. Both are serious reverse-steepers, as they lose over time some of what makes them special. In VR4’s case the caramel gets funky, and ouR whY qu4tro loses much of its almost effervescent sparkle, punch, and some of its vapor production. By contrast, GeJ GJ4 and MOV FVF RY4 both hold their own with great stability over time. They’re every bit as good after a year as they were on Day One. We’ll see how well KillR Y4 holds up to long-term steeping.
RBFS KillR Y4 grade: B
Link to purchase: RBFS KillR Y4 from VapingWatch