Pandanus tectorius, commonly known as the thatch screwpine, Tahitian screwpine, or hala tree, is a widespread, culturally significant species of palm-like tree or shrub in the family Pandanaceae. It is native to the coastal regions of the tropical Pacific, including Hawaii, Polynesia, and coastal Southeast Asia. The genus name Pandanus is derived from the Malay word pandan, while the species epithet tectorius is Latin for "used for roofs" or "covering," reflecting its centuries-old utility as a primary material for thatch roofing across the Pacific islands. Historically, this plant has been a pillar of Pacific Island ethnobotany, serving as a versatile resource for food, fiber, housing, and traditional medicine in environments where other resources were scarce.

The plant is physically striking, characterized by a thick, branching trunk supported by a distinctive network of prop roots (stilt roots) that emerge from the lower stem to provide stability in sandy, unstable coastal soils. Its long, sword-shaped, spiny-edged leaves are arranged in a spiral pattern around the branch tips, earning the plant its "screw pine" moniker. The fruit is a large, heavy, composite structure (a syncarp) that resembles a woody, segmented pineapple; each segment is called a "key" or "phalange." When ripe, these keys range from bright yellow to vibrant orange or red and are held together by a fibrous, woody core. Pandanus tectorius is highly salt-tolerant and thrives in littoral zones, often acting as a pioneer species that stabilizes beaches and dunes.

The fruit keys of the hala tree are a seasonal item in many Pacific cultures. The fleshy, fibrous base of each key is edible and can be eaten raw when ripe, possessing a sweet, juicy flavor reminiscent of mango or pineapple. In many traditional diets, the fruit is harvested, cooked in an earth oven (imu), and processed into a paste or dried into concentrated strips for long-term storage, providing a reliable carbohydrate source during periods of food scarcity. In the Maldives and parts of Polynesia, the fruit is also processed into a nutritious, nectar-like drink. Beyond the fruit, the starchy base of the young shoot (the heart of the tree) is sometimes consumed, although it is less common than the fruit.

Nutritionally, the fruit is a valuable source of dietary fiber, carbohydrates, and Vitamin C, alongside significant amounts of Vitamin A (derived from carotenoids). The biochemical profile of the fruit is notably rich in carotenoids like beta-carotene, which provide the vibrant yellow-to-orange pigmentation and act as essential antioxidants. Traditional medicine utilizes nearly every part of the plant: the aerial roots are used as a diuretic, the pollen is considered an aphrodisiac, and the floral bracts are valued for their intense, sweet fragrance. Modern research into the species is currently exploring the antimicrobial and anti-inflammatory properties of its complex volatile essential oils and specialized phenolic acids found within the fruit and leaves.

Major ingredients derived from this food source include fresh fruit keys, dried fruit paste (often called *tahitian bread* in some regions), concentrated fruit nectar, and aromatic floral extracts. Significant bioactive compounds associated with the source include **$\beta$-carotene**, **lutein**, **protocatechuic acid**, **p-hydroxybenzoic acid**, and a diverse array of **sesquiterpenes** responsible for the plant's potent aroma.