The Definitive Database

The Pepper Encyclopedia

Explore 202+ pepper varieties with verified Scoville ratings, flavor profiles, origin stories, and culinary applications — the most comprehensive pepper database online.

Popular: Jalapeño Habanero Carolina Reaper Ghost Pepper
Pepper of the Moment

7 Pot Primo

1M–1.5M SHU Super-Hot

Troy Primeaux, a horticulturist from Louisiana, developed the 7 Pot Primo by crossing a 7 Pot pepper with the wrinkled, tail-bearing pods that characterize some of the world's…

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7 Pot Primo
Origin
USA
Species
C. chinense
fruity floral

The Science of Spice

Pepper heat is measured in Scoville Heat Units (SHU), a scale developed by pharmacist Wilbur Scoville in 1912. The scale quantifies the concentration of capsaicin — the chemical compound that triggers the burning sensation on your tongue and releases endorphins.

Modern testing uses High-Performance Liquid Chromatography (HPLC) for precise capsaicin measurement, converting results to Scoville units. Heat can vary significantly within the same variety depending on growing conditions, soil, climate, and ripeness at harvest.

Scoville Scale Guide How SHU Testing Works
Current World Record
Pepper X
2,693,000 SHU
Certified by Guinness World Records, 2023

Heat Tier Quick-Nav

Extra-Hot Peppers

100K–350K SHU 34 varieties
Full Guide

Hot Peppers

30K–100K SHU 59 varieties
Full Guide

Medium Peppers

2.5K–30K SHU 46 varieties
Full Guide
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Head-to-Head Comparisons

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What's in Each Pepper Profile

Heat & Flavor

Verified Scoville Heat Unit range, detailed flavor notes (fruity, smoky, earthy), and heat character (fast burn vs slow build).

Culinary Uses

Best dishes, cooking methods, sauce pairings, dried forms, and how heat changes with preparation.

Growing Info

Days to maturity, plant size, ideal temperature range, and species classification (C. annuum, C. chinense).

Substitutes

Top 3 alternatives ranked by heat similarity and flavor match, with conversion ratios for recipes.

Pepper Tools & Resources

Pepper Collections

Best for Hot Sauce

Top peppers for creating balanced, flavorful hot sauces

Mild for Beginners

Gentle heat peppers perfect for building tolerance

World's Hottest

The extreme end: Carolina Reaper, Pepper X, and beyond

Frequently Asked Questions

What is the hottest pepper in the world?
Pepper X holds the current Guinness World Record at 2.69 million SHU, certified in 2023. It surpassed the Carolina Reaper (2.2 million SHU), which held the record since 2013. Both were bred by Ed Currie. View the full ranking on our super-hot peppers page.
How are Scoville Heat Units (SHU) measured?
The original Scoville Organoleptic Test (1912) diluted pepper extract in sugar water until a panel could no longer detect heat. Modern testing uses High-Performance Liquid Chromatography (HPLC) to measure capsaicin concentration in parts per million, then converts to SHU. One part per million of capsaicin equals approximately 15 Scoville units.
Why do SHU ranges vary so much for the same pepper?
Heat levels depend on growing conditions (temperature, soil, water stress), ripeness at harvest, and even the individual plant's genetics. A jalapeño can range from 2,500 to 8,000 SHU. Stressed plants (less water, more sun) typically produce hotter peppers.
What's the difference between C. annuum, C. chinense, and C. frutescens?
C. annuum includes jalapeño, bell pepper, cayenne, and serrano — the most widely grown species. C. chinense includes the superhots: habanero, scotch bonnet, ghost pepper, and Carolina Reaper. C. frutescens includes tabasco and Thai peppers. Species affects flavor, heat potential, and growing requirements.

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Pepper Guides

Growing tips, cooking techniques, and in-depth guides for pepper enthusiasts.

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