Health food abounds at fruit vendors' stalls along the streets of Tana.  Strung on the wires are ripe bananas; don't let the dark spots fool you into thinking they're overripe.  They're not picked a week ahead while still green and unripe like at home.  Lychee 'nuts' are in the baskets the lady is tending - they're in season mainly in December.  Papayas, mangos and highland nectarines are also in view.  The piles of white material are various grades of rice, sold by the kilo.