Chicory

Chicory

Here is a wiki link on the subject:  http://en.wikipedia.org/wiki/Chicory

Here is wiki link on coffee substitutes, including chicory:  http://en.wikipedia.org/wiki/Coffee_substitute

Here is another link discussing chicory as a coffee substitute or additive:  http://coffee.wikia.com/wiki/Chicory

Last, here is one story on making New Orleans style coffee with a mixture of coffee and chicory:  http://honest-food.net/2009/06/05/because-i-can-vol-2-chicory-coffee/