Papaya is a tropical fruit with a smooth, green skin that turns yellow when ripe. The flesh inside is a soft, juicy, and vibrant orange or red color with a cavity full of small, round, black seeds. It has a very sweet, musky flavor and is known for its high content of Vitamin C and a digestive enzyme called papain. Papaya is enjoyed fresh and is used in fruit salads, juices, and desserts.