I mixed a 10ml bottle of Ruyan 4 using the following recipe:
0.4mls of Ruyan 4 flavoring (4%)
6.5mls of 36mg nic liquid in a VG base
3.1mls of PG
specs: The resulting liquid is a 35/65 PG/VG blend at 24mg nic strength. Juice color is a golden amber. I let the mixed liquid steep for a week. Testing was done using a Boge 2.2 ohm LR carto powered by a Vector VV (Vtube 1.5t) set to 4.3 volts, producing 8.4 watts.
Tobacco Express Ruyan 4 is one of the new super-concentrated Chinese flavorings now carried by
EcigExpress. Recommended mix ratio with these super-concentrates is only 2.0–5.0%, so a 10ml bottle of concentrate will make
at least 200mls of diy mixed juice (and perhaps even
400-500mls). Cost is only $3.99/10ml bottle, so we're talking about a lot of very inexpensive ejuice here. Tobacco Express also offers a flavoring called “RY4,” which is a sweeter, more candy-toned or dessert RY4.
Ruyan 4 is a straight tobacco-caramel-vanilla blend. No nuts or other flavors that I can discern. Unlike most Chinese RY4s, balance was tossed right out the window for this DIY concentrate, as was unity of the overall flavor so characteristic of classic RY4s. The uneven flavor profile of Ruyan 4 is dominated by a synthetic tobacco, which is generic but quite tasty. It’s less bright than I expect in a typical Chinese RY4, but has more depth and carries a potent punch at 24mg nic. It's not overly smooth and carries an edge of roughness, which I like.
Caramel comes next and is distinct on both inhale and exhale. This caramel is not candy-like at all and is neither rich nor sweet. Instead, it has depth and lovely dark body.
Now for the problem: Vanilla. While the dark caramel walks contentedly alongside the strong tobacco, vanilla merely brings up the rear, like a very young child being pulled in a little red wagon behind his tobacco dad and caramel mom. The vanilla is almost an afterthought. As a flavor, it's almost undetectable in the mix. To the extent that I can perceive its presence, this is a very light vanilla that may have been intended to provide a counterbalancing airy uplift to the deeper tobacco and darker caramel. If that was the intention, however, the plan failed. To be a real RY4, this juice needs more vanilla. That said, it still tastes good.
As formulated, Ruyan 4 is definitely not the killer RY4 of all time, but it remains very vapable nonetheless. Closer to a caramel-tobacco blend than a true RY4, this diy juice should please tobacco lovers. With a little added vanilla, Ruyan 4 might just make RY4 lovers happy, too.
As with all diy juices, flavor intensity, throat hit, and vapor production are largely user-controllable, depending on the percentage of flavor concentrate, strength of liquid nic, and PG/VG base. My particular bottle is amply flavorful (4% concentrate), has substantial throat hit (24mg nic), and produces plumes of vapor (35/65 PG/VG base blend).
My closing comment is that I like Ruyan 4 more as I vape it longer. It's curiously satisfying, despite the lack of balance. This juice could grow on me. Both the tobacco and caramel are particularly good. Compared to the ten-or-so other RY4 diy flavorings I've tried, this mix easily holds it own and is significantly better than most, in my personal opinion. I think I'll leave this batch as-is and whip up another 10ml bottle to which I'll add a little extra vanilla. Later, I'll post a follow-up on the thread to report how that works out after a week or so of steeping.
Tobacco Express Ruyan 4 diy flavoring - Grade: a nice, solid
B.
Link to purchase:
http://www.ecigexpress.com/flavorse...c-16_96_98/tobacco-express-ruyan4-10ml-p-1532