The Carolina Reaper is roughly 275 times hotter than a jalapeño — and not even close to the world record.
How to Play: Guess if the spice on the right has a HIGHER or LOWER Scoville heat rating than the one on the left.
Name A
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Top 10 Hottest Peppers
The Scoville scale measures the concentration of capsaicin — the molecule responsible for the heat sensation — in Scoville Heat Units (SHU). Pure capsaicin is 16,000,000 SHU. Pepper spray sits around 2–5 million.
Hot pepper records have escalated rapidly: the Bhut Jolokia (Ghost Pepper) was the world record-holder in 2007 at 1 million SHU. By 2013, the Carolina Reaper raised the bar to 2.2 million. Pepper X (2023) is now the official record at 2.69 million.
| # | Name | Heat (SHU) | Unit |
|---|---|---|---|
| 1 | Pure Capsaicin | 16,000,000 | SHU |
| 2 | Pepper X | 2,693,000 | SHU |
| 3 | Carolina Reaper | 2,200,000 | SHU |
| 4 | Trinidad Moruga Scorpion | 2,000,000 | SHU |
| 5 | 7 Pot Douglah | 1,850,000 | SHU |
| 6 | Trinidad Scorpion Butch T | 1,463,700 | SHU |
| 7 | Naga Viper | 1,382,118 | SHU |
| 8 | Bhut Jolokia (Ghost Pepper) | 1,000,000 | SHU |
| 9 | Red Savina Habanero | 580,000 | SHU |
| 10 | Chocolate Habanero | 577,000 | SHU |
How Scoville Ratings Are Determined
The Scoville scale was invented in 1912 by pharmacologist Wilbur Scoville. His original method, the Scoville Organoleptic Test, asked human tasters to dilute a pepper extract in sugar water until the heat became undetectable. The dilution ratio became the SHU value — 1,000,000 SHU means the extract had to be diluted a million-fold to disappear.
Modern Scoville ratings use High-Performance Liquid Chromatography (HPLC), which directly measures capsaicinoid concentration in parts per million. The HPLC value is multiplied by 16 to get the equivalent Scoville rating. This method is more reproducible than human tasting but has retained the original SHU units for continuity.
Pepper X became the official record-holder in October 2023, dethroning the Carolina Reaper after 10 years on top. Pepper X was bred by Ed Currie of PuckerButt Pepper Company — the same person who created the Carolina Reaper. Both peppers are protected commercial varieties; seeds are not sold to the general public.
Wasabi, mustard, and horseradish technically do not register on the Scoville scale because they do not contain capsaicin. Their heat comes from allyl isothiocyanate, a different molecule with different chemistry — which is why the heat hits the sinuses rather than the tongue and dissipates much faster. They are sometimes given approximate SHU equivalents for cross-comparison.
Frequently Asked Questions
What is the world's hottest pepper?
Pepper X, certified by Guinness World Records in October 2023 at 2,693,000 SHU. It surpassed the Carolina Reaper’s 2.2 million SHU record from 2013.
How hot is a jalapeño?
Jalapeños range from 2,500 to 8,000 SHU, with a typical value around 5,000. They are mild compared to most chili peppers worldwide.
Why does pepper heat feel different from wasabi heat?
Pepper heat comes from capsaicin, which binds to heat-sensing receptors on the tongue. Wasabi/horseradish heat comes from allyl isothiocyanate, which affects sinus and nose receptors instead. The sensations are produced by different molecules with different timing.
Is the Scoville scale subjective?
Originally yes — Wilbur Scoville’s 1912 method used human tasters. Modern Scoville ratings use HPLC chemistry to measure capsaicin directly, eliminating taster variance.
Note: SHU values are the upper bound from public references. Individual peppers vary by ±20% depending on growing conditions, ripeness, and genetics.
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