ONLY FOR THE OLDER VERSION OF INW GOLD DUCAT!
INW is changing their formulation for Gold Ducat. Shame. I've had this one locked up for a while longer than I should have.
The FA Caramel and TFA Brown Sugar are just added little bonuses for this recipe. Leave them out if you prefer and enjoy a solid pipe tobacco taste with notes of honey and syrup. Steep time based on your preference. To me, its OK overnight, but it does get better after a week, two weeks, and so on.
More on INW formulation changes here: https://www.reddit.com/r/DIY_eJuice/comments/61mszy/inw_leaked_reformulations/?st=j0rda07p&sh=c08555ad