FoodWhy Wasabi Heat Feels Different From Chili Pepper Heat
What Is the Difference Between Sweet and Hot Peppers?
From super sweet bells to scorching serranos, peppers are enjoyed in many global cuisines but what are the differences between hot and sweet peppers on a biological level? Can you tell the difference between an innocently sweet pepper and a five-alarm chili? It's probably best that you're able to especially when traveling or eating unfamiliar food. There are many factors that go into the heat level of a specific pepper, including its genetic makeup and growing conditions, but knowing the basics can protect your tongue from an unpleasant surprise.
I love hot peppers, but I can’t stand wasabi. Both might be described as “hot” or “spicy,” but they create that feeling in different ways. Here’s how.
You may have heard of capsaicin, the oily chemical in jalapeños, hot sauce, chili powder, and other hot-pepper-derived foods and condiments.
Wasabi, mustard and horseradish contain a different chemical, allyl isothiocyanate. (This is no relation to the chemical in mustard gas, which is unrelated but got its name because early preparations reportedly smelled like mustard.)
Both chemicals hurt us in a similar way: they bind to receptors in our mouth or nose that exist to warn our brains of painful stimuli. Your tongue isn’t actually being damaged, but your brain is getting a signal as if it were.
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The two chemicals primarily target different receptors: capsaicin is best known for stimulating TRPV1, which also reacts to heat, and allyl isothiocyanate binds to TRPA1, which also reacts to a variety of chemical irritants. So they are tricking your brain in slightly different ways.
There’s another way the two chemicals feel different: capsaicin is an oily molecule that sits on your tongue, so the chili pepper residue may linger until you have some fat-containing foods like yogurt or milk to wash it away. Meanwhile, allyl isothiocyanate is more volatile, meaning it’s likely to waft up your nose. The upside of that: After irritating your receptors, it can float away, meaning the pain from wasabi is short-lived.
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