Papayas peak in early summer. As the fruit ripens, it changes color gradually from green to yellow-orange, beginning first at the bottom and progressing toward the stem. At the store, choose papayas that are half yellow and store at room temperature for a few days to let them fully ripen. When gently squeezed, the fruit should yield slightly.
For a most delicious and healthy breakfast, squeeze a wedge of lime over a halved papaya.