Ripe papaya is sweet, juicy, and has a soft, almost buttery texture, while unripe papaya is firm, has a neutral to slightly bitter taste, and a crisp texture.
The difference in taste between ripe and unripe papaya is significant due to the changes in the fruit's composition as it matures.
Ripe Papaya: As papaya ripens, its starch content converts into sugars like fructose and glucose. This process gives ripe papaya its characteristic sweetness. The flesh also softens as enzymes break down the cell walls, resulting in a smooth, almost melt-in-your-mouth texture. The flavor is often described as a blend of melon, peach, and mango, with a subtle tropical aroma.
Unripe Papaya: Unripe papaya, on the other hand, is not sweet. It contains high levels of latex and enzymes that give it a slightly bitter or bland taste. The texture is firm and crisp, similar to a cucumber or green mango. Because of its neutral flavor and firm texture, unripe papaya is often used as a vegetable in savory dishes, such as salads (like Thai green papaya salad) and stews.
If you accidentally buy a papaya that's not quite ripe, you can speed up the ripening process by placing it in a paper bag with a banana or apple. These fruits release ethylene gas, which promotes ripening.