The CDV RY4 is the best synthetic liquid i have used . Not too sweet ,no acidic aftertaste and not too sweet . I will be re ordering this for sure . Personally ,as i came from NETs i like a bit more Tobacco taste so mix some of it with the excellent CDV Euro blend of tobacco that was recommended to me by Keith and Lisa . This gives it a slightly more Tobacco taste with a nutty edge . Superb when used in the Taifun GTR.
Sterling products and a service from CDV to match .

I was a former user of normal RY4.
Than, 6 years ago I tried this aroma and was stunned.
I tasted real tobacco, and very far on the background a bit of vanilla en nuts.
With this aroma I convinced many people to quit smoking.
If you want a full taste, mix it at 10%
You can steep it conventional or in a ultrasonic bath.
It get better in time.

This is tobacco'y, with a certain deliciousness that others don't seem to have. Almost caramel, almost vanilla, really there is a complex note to it which is hard to put your finger on. However it is entirely satisfying, and doesn't get boring over the whole day. I recommend!