I have yet to make a really good "true" tobacco tasting mix from any of the flavorings I have tried, including Tobacco absolute. Most have that weird floral, perfumey, chemical taste that is overpowering.
This is a mix, that I don't consider great, but it does not have any weird flavors and is vapeable without having to age months.
6 drops 555 Tobacco Flavor from Tobacco Express
2 Drops Red Tobacco Flavor from TFA AKA TPA
2 Drops Caramel (FlavourArt)
2 Drops 10% Ethyl maltol
1 Drop Acetyl Pyrazine from TFA AKA PA
1 Drop Vape Wizard (FlavourArt)
Add nic base and diluent to 3 mL final volume. I use 50/50 PG/VG nic and base, at ~15 mg/mL final nic level.