Pueraria montana var. lobata is a perennial climbing vine in the family Fabaceae, widely known as kudzu. It is native to East Asia, particularly China, Japan, and Korea, where it has long been cultivated and used as a food and medicinal plant. The genus name Pueraria honors the Swiss botanist Marc Nicolas Puerari, while the species name montana derives from Latin meaning “of the mountains,” referring to the plant’s natural habitat in upland regions. The varietal epithet lobata comes from Latin lobatus, meaning “lobed,” describing the characteristic lobed shape of the plant’s leaves. Kudzu was historically introduced to other regions, including North America, where it became well known for its extremely vigorous growth and invasive behavior as "the vine that ate the south".

The plant produces long trailing vines that can grow many meters in a single season, supported by large trifoliate leaves and clusters of purple, fragrant flowers. Beneath the soil, it develops large starchy tuberous roots that serve as the primary edible portion. These roots have been harvested for centuries in East Asia as a source of starch and medicinal compounds. The plant thrives in warm climates and can grow rapidly in disturbed environments, climbing over trees and structures using twining stems.

As a food source, Pueraria montana var. lobata is valued primarily for the starch extracted from its roots. The roots are processed to produce a fine white powder known as kudzu starch, which is used as a thickening agent in soups, sauces, desserts, and traditional confectionery. In Japanese cuisine it appears in dishes such as kuzumochi and clear thickened sauces, while in Chinese cooking it may be used in herbal soups and traditional preparations. The starch forms a smooth, translucent gel when heated with water, giving it desirable textural properties.

Chemically, the roots contain a variety of bioactive compounds, particularly isoflavones characteristic of legumes. Notable compounds include puerarin, daidzin, daidzein, and genistein, which have been studied for antioxidant, anti-inflammatory, and cardiovascular effects in experimental research. The plant also contains significant amounts of starch, dietary fiber, and minor amounts of proteins and minerals.