Tepin

Tepin, also called Chiltepin or Bird Pepper, is a wild form of Capsicum annuum that grows naturally in the Southwestern United States and northern Mexico. It is not a modern cultivated hybrid but a naturally occurring wild pepper with deep historical roots in the region.

The fruits are very small and round to slightly oval, typically under 10 mm in diameter. Pods ripen from green to bright red and have smooth, glossy skin. Plants grow as perennial shrubs in suitable climates and may live for many years in protected canyon and desert habitats.

Heat is generally reported between 50000 and 100000 SHU. A working figure of 75000 SHU reflects the central range most commonly cited. Heat can vary significantly depending on growing conditions and environmental stress. There are laboratory tests published for wild populations, but values differ widely by region and season.

Tepin has long been harvested by Indigenous communities in the US-Mexico borderlands, including O’odham, Yaqui and Opata peoples. It is traditionally sun-dried and used in salsas, soups and as a crushed seasoning. Birds play a key ecological role in seed dispersal because they are not affected by capsaicin.

The pepper is sometimes called “the mother of all peppers” in popular chilli culture, though this is a simplification. It is a wild relative within the Capsicum annuum group and contributed genetic diversity to cultivated forms, but it is not the sole ancestor of all domesticated peppers.

Confusion sometimes occurs between tepin and pequin peppers. While similar in heat, they differ in fruit shape and growth habit and are not identical. As a wild form used for centuries before written agricultural records, earliest documented reference is pre-1500s.