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Serrano pepper

The serrano pepper is a chili pepper cultivar of *Capsicum annuum* originating in the Mexican states of Puebla and Hidalgo.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

The serrano pepper is a chili pepper cultivar of *Capsicum annuum* originating in the Mexican states of Puebla and Hidalgo. It is known for its bright, crisp flavor and medium-to-hot heat, typically rated around 10,000 to 25,000 Scoville Heat Units. Serranos are widely used fresh in salsas, pico de gallo, and other Mexican dishes.

Origin and name

The serrano pepper originated in the mountainous regions of Puebla and Hidalgo in Mexico. Its name comes from the Spanish word for mountain range, reflecting that origin.

Heat and flavour

Serrano peppers are typically rated at 10,000 to 25,000 Scoville Heat Units. They are described as crisp, grassy, and bright in flavour, with a level of heat that is noticeably stronger than a jalapeño.

Culinary uses

Serranos are widely used in Mexican cooking, especially in fresh salsas, pico de gallo, and guacamole. They may also be used in hot sauces and other dishes where a sharp chili flavour is desired.

Appearance and ripening

Serrano peppers are slender, small chilies that are usually harvested green. As they mature, they can turn red or other colours depending on the variety and growing conditions.

Key facts

  • The serrano pepper is a chili pepper in the species Capsicum annuum.
  • Its name refers to the mountains (sierras) of its native region in Mexico.
  • It is generally hotter than a jalapeño but milder than many habanero peppers.
  • Serranos are commonly used fresh rather than dried.
  • They are valued for a bright, grassy flavour and firm texture.
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Canadian context

Serrano peppers are commonly sold in Canadian supermarkets and used in home cooking and restaurants, especially in Mexican and broader Latin American dishes.

Frequently asked questions

How hot is a serrano pepper?
It is usually rated around 10,000 to 25,000 Scoville Heat Units, making it hotter than a jalapeño.
Where do serrano peppers come from?
They originated in the Mexican states of Puebla and Hidalgo.
What does 'serrano' mean?
It refers to mountains or mountain regions in Spanish.
What are serrano peppers used for?
They are commonly used fresh in salsas, pico de gallo, guacamole, and hot sauces.
What colour are serrano peppers?
They are often sold green, but ripe peppers can also be red, orange, brown, or yellow.

References

  1. Gardenia — https://www.gardenia.net/plants/common-names/serrano-pepper
    Supports: Origin, name meaning, heat range, flavour profile
  2. Wikipedia — https://en.wikipedia.org/wiki/Serrano_pepper
    Supports: Scientific name, origin, heat range, common uses
  3. PepperScale — https://pepperscale.com/serrano-peppers/
    Supports: Heat range, origin, culinary uses
  4. Gardenia — https://www.gardenia.net/plant/capsicum-annuum-serrano-pepper
    Supports: Botanical name, size, colour changes, origin, heat range
  5. Cozymeal — https://www.cozymeal.com/magazine/serrano-pepper
    Supports: Common culinary uses