Serrano
15,000 SHU · Capsicum annuum
MediumHeat range
10,000 to 25,000 SHU. Typical: 15,000 SHU.
Individual peppers vary within this range based on growing conditions, ripeness, and genetic variation. See the Scoville scale guide for why the range matters.
Flavor and character
Serrano has flavors of bright, crisp, more immediate heat than jalapeño, citrusy.
The serrano is a step up from the jalapeño in both heat and flavor intensity. It is smaller, thinner-walled, and hits faster. Where a jalapeño gives you a slow build, a serrano announces itself immediately. The flavor is bright and clean with a slight citrus edge. Serranos are the pepper of choice for fresh Mexican salsas when cooks want more kick than a jalapeño provides. They are almost always used fresh rather than dried because their thin walls do not dry well. In Thai cooking, serranos are a common substitute when Thai bird chiles are unavailable, though they are noticeably milder.
How it’s used
Serrano is commonly used in fresh salsas, pico de gallo, Thai-style dishes, hot sauces.
What to use instead
These substitutions match heat, not flavor. Flavor character changes substantially between peppers. For custom quantities, use the substitution calculator.
Compare with another pepper
Other peppers to explore
Frequently asked questions
How hot is Serrano compared to a jalapeño?
Serrano at 15,000 SHU is roughly 3× hotter than a typical jalapeño (5,000 SHU). That is a significant difference in capsaicin concentration.
What does Serrano taste like?
Serrano has flavors of bright, crisp, more immediate heat than jalapeño, citrusy. Beyond the heat, these flavor notes distinguish it from other peppers at similar Scoville ratings.
Can I grow Serrano at home?
Yes. Serrano grows well in USDA zones 7+ and can be grown in containers in cooler zones. Start seeds indoors 8–10 weeks before last frost. Full sun, moderate water, and well-drained soil produce the best results.
Is Serrano hotter than Cayenne?
No. Cayenne at 40,000 SHU typical is hotter than Serrano at 15,000 SHU. Compare them side by side on the comparison tool.
What's a good substitute for Serrano?
The closest substitutes are Jalapeño and Cayenne. These share similar heat ranges and compatible flavor profiles. For exact quantity ratios, use the substitution calculator.
What is Serrano's Scoville rating?
Serrano ranges from 10,000 to 25,000 SHU, with a typical measurement of 15,000 SHU. This range reflects natural variation in capsaicin production due to growing conditions, ripeness, and genetics.