Lee, thought you were onto something here. Why not grow our own cocoa. Then I googled it and it looks like a delicate plant/tree and needs a very specific environment to grow. Copied this from e-How.
Chocolate plants must be kept frost free. They will not handle cold weather at all and may die at temperatures below 50F. To grow cocoa pods, plants need to be kept above 70F and above 60% humidity (70% preferred) they do not like temperatures above 90F. Although older plants can handle sun, they stop producing after about 10 years if grown in the sun. The cocoa plant prefers shade as they would get if in their natural habitat the rain forest near the equator.
Read more: How to Grow Cocoa / Chocolate | eHow.com http://www.ehow.com/how_5412038_grow-cocoa-chocolate.html#ixzz1COKYmYO8