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Home » Frequently Asked Questions » How Do You Measure Chili Pepper Heat?

How Do You Measure Chili Pepper Heat?

by Mike Hultquist · Apr 18, 2013 · 3 Comments

Learn how scientists measure the heat levels of chili peppers and hot sauces with the Scoville Heat Scale and modern techniques.

How do you measure chili pepper heat?

Measuring Chili Pepper Heat

Since capsaicin is the heat producing substance found in peppers, it is only natural to measure pepper heat by measuring the amount of capsaicin within the pepper. But how?

In 1912, a pharmacologist named Wilbur Scoville invented a standard for measuring the capsaicin in peppers, and subsequently the power of that pepper heat.

He called the test, interestingly enough, the “Scoville Organoleptic Test.” Now there’s a name for you. How did it work?

Scoville ground chile peppers into a mixture of sugar water and alcohol. He then had five tasters sip the mixture and grade it for hotness.

Since then, we’ve come up with more sophisticated methods for grading the hotness of peppers into units called “Scoville Units” in honor of the man who took on such a proud and wonderful task.

Measuring Chili Pepper Heat Today

A more accurate way to measure capsaicin, the chemical that gives chili peppers their heat, is with high-performance liquid chromatography (HPLC).

This allows chemists to separate and isolate the capsaicin in a chili pepper sample.

This method allows for much greater accuracy in measuring chili pepper heat, as well as the heat levels of other foods, such as hot sauce.

It is also more reliable than panels of individual taste testers.

Chili Pepper Heat Ranges

Chili peppers range from 0 Scoville Units for the regular bell pepper to upwards of 2,000,000 to 3,000,000 Scoville Units for the extremely hottest chili peppers.

Talk about hot! And what a range!

Jalapeños are about 5,000 Scoville Units, smack dab in the perfect spot for hotness and taste.

Learn more about the Scoville Scale.

Peppers can be used as a weapon. Imagine this: you’re about to be mugged when suddenly you take the attacker by surprise and hurl a dozen or so hot peppers at him, poking him in the eye and causing him to slip and fall…

Seriously, many pepper sprays use the chemical, capsaicin, to ward off attackers and promote safety.

Pepper sprays are marketed to women and police, and even to hunters who can use the power of the pepper to ward off grizzly bears in the woods.

It’s even been said that pepper spray is even more effective than tear gas!

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  1. Russell says

    August 24, 2021 at 10:46 am

    Hi Steve,
    How would You measure the heat of homemade hot sauces?

    Reply
    • Russell says

      August 24, 2021 at 10:46 am

      Sorry Mike !!!
      I typed Steve instead of Mike!!!

      Reply
    • Michael Hultquist - Chili Pepper Madness says

      August 24, 2021 at 11:35 am

      Hey, Russel. It's hard to measure exact heat without a chemical test. You really just need to make more of a judgment call.

      Reply

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