Arracacia xanthorrhiza, universally known as arracacha, white carrot, Peruvian carrot, or apio criolla, is a perennial root vegetable in the family Apiaceae. It is native to the high-altitude Andean regions of South America, with its primary centers of cultivation located in Colombia, Ecuador, Peru, and Bolivia. The genus name Arracacia is derived from the local Quechua name for the plant, while the species epithet xanthorrhiza comes from the Greek xanthos ("yellow") and rhiza ("root"), directly referencing its characteristically deep yellow-fleshed tuberous roots. Historically, it was a staple crop for pre-Columbian civilizations, valued as a highly digestible and nutritious complement to the potato, and it remains a vital regional food crop today, often referred to as the "Andean potato" because of its economic importance.

The plant is a low-growing, bushy herb that reaches heights of up to 1 meter, characterized by dark green, deeply lobed, celery-like leaves that form a dense crown. It is primarily cultivated for its cluster of fleshy, starchy taproots that grow in a circular arrangement around the base of the stem. These roots are tapered and roughly the size of a large carrot or parsnip, featuring a white-to-light-brown outer skin and a dense, vivid yellow or white interior flesh. Arracacha requires a specific high-altitude, temperate climate to thrive—typically between 1,800 and 2,500 meters—and possesses a long maturation period of 10 to 12 months, which contributes to its status as a premium, somewhat labor-intensive crop in Andean agricultural systems.

The arracacha is celebrated for its incredibly refined texture and unique culinary profile, which is often described as a sophisticated marriage between a carrot, a parsnip, and a roasted chestnut. It is extremely popular in the Andean region for its versatility; it can be boiled, fried, mashed, or used as a thickening agent in thick, creamy soups and stews (sancochos). The roots are prized for their high starch content and easy digestibility, making them a preferred dietary inclusion for infants, the elderly, and those with sensitive digestive systems. In Brazil, it is a highly regarded gourmet ingredient known as mandioquinha-salsa ("little salsa cassava"), where it is processed into specialized purees, gnocchi, and high-end restaurant soups. Unlike many other root crops, the young leaves and shoots of the arracacha are also edible and occasionally used as a flavorful aromatic garnish.

Nutritionally, arracacha is a carbohydrate-dense energy source, but it distinguishes itself by being remarkably higher in calcium and phosphorus than many other common tuberous vegetables. It is also an excellent source of Vitamin A (in the form of beta-carotene, which gives the yellow varieties their color) and Vitamin C. Its starch is composed of very small, easily digestible granules, which facilitate rapid assimilation in the human gut. The plant also contains a range of bioactive compounds, including various coumarins and polyacetylenes, which are common in the Apiaceae family and are associated with antioxidant and antimicrobial properties. In traditional Andean folk medicine, infusions of the roots and leaves have been used to support digestion and as a soothing tonic, though the modern focus is primarily on the root's role as a nutrient-dense functional staple.