tobacco fermentation FERMENTING IN MY HOME MADE KILN Chapter 4. Sorting & Fermentation

When the FDA won regulatory control over the tobacco industry a few years ago, the agency tightened limits on the sale of branded merchandise and banned sponsorships of sporting and entertainment events

Furthermore, although they are not marketed to compete directly with consumer products, medicinal nicotine replacement therapies (NRT) such as nicotine gums, lozenges, inhalers and transdermal patches are also accessible as an aid to smoking cessation and freely available over-the-counter in many countries

Its not going to be the best vaporizer for big groups or heavier users because of the battery life

PMID 22405889

As for exactly how long, there are numerous factors at play - including the cigars vitola