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You are here: Home / Kitchen Tales / Pantry Staples / Pepper is NOT Chili; Sichuan Pepper is NOT Real Pepper

Pepper is NOT Chili; Sichuan Pepper is NOT Real Pepper

Although it is often referred to as chili pepper, chili is not a pepper. They come from different plants. And, just to address a common miconception, Sichuan pepper is not real pepper at all.

Peppercorn and Sichuan Pepper, Differentiated

Chilies are berries of genus Capsicum. I’ve already dedicated an entire post on chilies so I won’t repeat all that anymore. Black pepper is Piper nigrum. Sichuan pepper are from at least two species of small trees in the genus Zanthoxylum.

The photo above shows dried pepper and dried Sichuan pepper, and illustrates how different they look. But it isn’t only in appearance that they differ. Pepper is hot; Sichuan pepper is not.

Black pepper

Although chilies and peppers are both hot, there is a distinct variety in the heat. This is because the heat of black pepper comes from a chemical compound called piperine while the heat of chilies comes from capsaicin.

Fresh peppercorns
Image credit: K Hari Krishnan / CC BY-SA

Above is a photo that shows what pepper looks like while growing. It is green while unripe and it is at that stage that it is harvested. Each green globe is called a drupe.

But isn’t pepper either black or white?

When the drupes are havested and dried, black peppercorns are produced. When the dark outerskin of the drupes are removed, white peppercorns are the result.

If you go to gourmet stores, however, you will find red, pink and green peppercorns. They all come from the same plant.

Green peppercorns are also the unripe fruits of Piper nigrum. They are either treated or pickled before drying to retain the color.

Red peppercorns are the ripe fruits of the same plant.

Sichuan pepper

fresh and dried Sichuan pepper (zanthozylum limonella alston)

The photo above shows fresh Sichuan pepper on the left and dried Sichuan pepper on the right. Note, however, that, when fresh, Sichuan pepper is either red (Zanthoxylum simulans) or green (Zanthoxylum schinifolium).

Sichuan pepper is not hot the way real pepper is. However, it leaves a numbing and tingling sensation in the mouth due to the presence of a molecule called hydroxy-alpha sanshool. The flavor and aroma are subtly citrusy.

When cooking with Sichuan peppers, the seeds are removed and only the husks are used.

Relatives of the Sichuan pepper

There are other species in the genus Zanthoxylum that are also used as spices in Asia.

mah-kwan or makhwaen, a spice native to northern Thailand
Mah kwan at a cooking class in Chiang Mai.

Makhwaen (also spelled mah kwan), a spice ubiquitous in northern Thai cooking, is Zanthoxylum limonella. Its aroma is more intense than that of Sichuan pepper. The flavor is more orange-y than lemony.

Then, there are the Japanese spice sansho (Zanthoxylum piperitum) while the Nepalese timur (Zanthoxylum alatum), both of which I haven’t tried so I won’t make any guess about whether or not their flavor and aroma are more intense than those of Sichuan pepper.

Recipes with Sichuan pepper

  • Sichuan Stir Fried Potatoes
  • Sichuan Bang Bang Chicken
  • Ma Po tofu
  • Alex’s dandan noodles with whole shrimps
  • Kung Pao Chicken
Published: April 19, 2020 • Last modified: April 19, 2020 ♥ Pantry Staples, Herbs & Spices
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