Well being that the elusive quality you're looking for is supposed to be in EcoPure… unless you're referring to their menthol, it has to be one of four things (or the specific combination/ratio thereof):
Ethyl Maltol
Deionized Water
Nicotine juice
Glycerol (VG)
Since all of EcoPure's marketing info proudly proclaims that they use ONLY those 4 ingredients, it should help narrow your search.
I'm guessing it's simply your experience of Ethyl Maltol or possibly Ethyl Maltol when specifically mixed with VG since EcoPure and BWB's Maltys share that combo.
Ethyl Maltol
Deionized Water
Nicotine juice
Glycerol (VG)
Since all of EcoPure's marketing info proudly proclaims that they use ONLY those 4 ingredients, it should help narrow your search.
I'm guessing it's simply your experience of Ethyl Maltol or possibly Ethyl Maltol when specifically mixed with VG since EcoPure and BWB's Maltys share that combo.