Did you know that what we know about the domestication of the eggplant mostly comes from ancient history?
Eggplant (Solanum melongena). Photo by Garrett and Kitty Wilkin
It turns out that, due to the plant's characteristics, there is a lack of archaeological evidence from eggplants in general. But, a detailed description of how eggplants came to be large, purply and (more or less) not as bitter as the wild form can be found in Chinese botanical reports dating back to the 1st century BC.
Fascinating stuff, and so just perfect for our About.com Guide to Plant Domestication.