every thing you need to know is here
http://www.e-cigarette-forum.com/forum/general-e-liquid-discussion/274904-natural-tobaccos-897.html
I would suggest you try some pipe tobacco juices from naturally-extracted-tobacco.com.
I really like their Coventry, a vanilla pipe tobacco. They have many other good flavors as well.
These guys nailed it. Also try Gold from NETCOM (http://www.e-cigarette-forum.com/forum/general-e-liquid-discussion/274904-natural-tobaccos-897.html).
Their Big Spirit is cigarette tobacco extraction. With 'heat' extract option there are cocoa notes after ~2 weeks of aging.
NETCOM is a fantstic first first step in to NETS because Clay has liquids from mild to wild. If you're not sure of a liquid just shoot him an email. He's always helpful with his responses.
Also Electronic Cigarettes Chicago | E Cigarettes | E Cigs | Smokeless Cigarettes | eCigarette Minooka, IL is another good intro to NET. Try Patriot and Analog.
I'm ripping through the first, and the second should be a month steeped before i get to it.goodejuice patriot is my favorite. Honorable mention for goodejuice natural perique
Pipe Tobacco? For me it doesn't get better than Grandpa's Night Cap
Quick nic Juice Grandpa's Night Cap Naturally Extracted Tobacco flavored e-liquid 15ml bottle. E-juice Made in the U.S.A
I really like Patriot, but can't tell from where i'm baking on a volt whether this tastes like cigar, cigarette or both.
Don't forget Want2Vape... their London Blend is one of my all time favorites. It is a head clogger though, only downside I can think of.
NETCOM's Coventry and Balkan are awesome as well, in their own right. Black Cavendish is superb! That one is one of the few that I NEVER roll my window down while driving, I don't care how foggy it gets... the aroma is out of this world!
Awesome! I've got some Balkan coming my way. Was on the fence about the cavendish. Perhaps next time. Thanks for the heads up on Want2Vape...sounds good as well!