check out RTP--Reconstituted Tobacco Product. It used to be tobacco, but after the cutting and shredding and processing it turns to dust. The dust is then treated with the chemicals to enhance the nicotine in a solution of water. It is dried and compressed into sheets. Then it is cut into ribbons resembling cut tobacco and put into a cigarette. Sounds yummy. Sounds like cheese in a spray can, ok it is cheese (sort of) but not in the strictest sense. Better cigarettes will contain more real tobacco--but not 100%. Lesser cigs will have more RTP. I'm thinking that pipe tobacco does not go through this metamorphosis. With the cigarette tax that is so high, the manufacturers are probably forced to sweep the floors and make the RTP a larger percentage of their product to make the cigarette more affordable and meanwhile make them more addictive and unhealthful in the process, discounting the desired effect of higher taxes of the cigarette to discourage the act of smoking them in the first place. This is an example of the unintended consequence of a well meaning law. But let's not shine too much light on that subject as it might upset those who desire to think for their fellow man.