Peruvian sumac (Rhus peruanum), known locally as urco, is a flowering shrub native to the high-altitude regions of the Peruvian Andes. A member of the Anacardiaceae family (relatives include cashews, mangoes, and poison ivy), it produces clusters of vibrant red berries that have been a culinary and medicinal staple in South America for centuries.
The dried berries are ground into a coarse, deep-red powder with a tart, citrusy, slightly astringent flavor—often compared to lemon zest or vinegar but with a unique fruity depth. It is a versatile acidulant in Peruvian cuisine:
Indigenous healers have long used urco for its anti-inflammatory, antimicrobial, and antioxidant properties, attributed to flavonoids, tannins, and vitamin C. Contemporary research is exploring its potential for metabolic health and food preservation.
Once a hyper-local ingredient, Peruvian sumac is now gaining global attention among chefs and food enthusiasts seeking novel, natural acidulants with a terroir-driven story.