Jícama is a vine native to Mexico and Central and South America that is grown for its edible tuberous root. Jícama is also called yam bean. Its scientific name is Pachyrhizus erosus or P. tuberosus.
The jícama plant produces globular, brown-skinned tubers that are white, crisp, and juicy inside. Some varieties (jícama de aqua) have clear juices, and some varieties (jícama de leche) have milky juice. Both types of tubers are mild-flavored and usually are eaten raw in salads or sprinkled with lime juice and powdered chili peppers as a snack. Jícama can also be cooked.
The very young seedpods of the plant are sometimes eaten. However, the mature seeds contain rotenone, a chemical used as an insecticide, and are highly toxic.