Karatina Town seems a long way from Nairobi, Kenya's capital city of three million people. Yet, 100 km away, about a two-hour drive on the country's tattered roads, the town is the food basket of the city. At dawn, while Kenya turns in its sleep, Peter Kimani is awake and on his way to Karatina Central Farmers Market, the largest produce market in Eastern Africa, to dispose of his produce.