I'm pretty sure its guaiacol.
I accidentally made a batch that tasted just like 555. I used 3ml PG, 5 drops FA Virginia, 5 drops FA Vanilla, 2 drops of diluted tobacco Absolute (1 drop 50% TA diluted in 1 ml of PG)
Then I added one drop of the 1% Guaiacol from TPA and it really made it taste like 555. The guaiacol really added that smoky, dry, nutty flavor that I get from 555.
Hope this helps if you are trying to diy a 555 type flavor. I wish I wrote my recipe down because I can't remember if I left anything out. But definitely look into guaiacol if you want to nail 555 on the head. Just wish I could accidentally make a DK tab or RY4 now
I accidentally made a batch that tasted just like 555. I used 3ml PG, 5 drops FA Virginia, 5 drops FA Vanilla, 2 drops of diluted tobacco Absolute (1 drop 50% TA diluted in 1 ml of PG)
Then I added one drop of the 1% Guaiacol from TPA and it really made it taste like 555. The guaiacol really added that smoky, dry, nutty flavor that I get from 555.
Hope this helps if you are trying to diy a 555 type flavor. I wish I wrote my recipe down because I can't remember if I left anything out. But definitely look into guaiacol if you want to nail 555 on the head. Just wish I could accidentally make a DK tab or RY4 now