Makwaen vs Sichuan pepper
The short answer
Two Zanthoxylum fruits, and not interchangeable. Sichuan pepper is defined by the tingling numbness of its sanshools. Makwaen, from northern Thailand and south-western China, is described as hot and pungent, with an aroma dominated by limonene; no source found here describes it as numbing. Where a recipe wants the numbing, makwaen will not supply it.
Side by side
| Makwaen | Sichuan pepper | |
|---|---|---|
| Botanical identity | Zanthoxylum myriacanthum Wall. ex Hook.f., Zanthoxylum myriacanthum var. pubescens (C.C.Huang) C.C.Huang | Zanthoxylum bungeanum Maxim., Zanthoxylum simulans Hance |
| Part used | fruit | fruit |
| Origin | Southern and south-western China and tropical South-East Asia, including Vietnam, Myanmar and India. | Temperate and montane East Asia, with China the centre of cultivation and use. |
| Flavour notes | citrus, resinous, peppery, pungent | citrus, floral, woody, numbing, bitter |
| Heat | Scoville does not apply | Scoville does not apply |
| Flavour | Hot and pungent, and used to add spiciness as well as aroma to a meal. | The flavour is citric, floral and mildly bitter, but the flavour is not the point. Within seconds of chewing a husk the lips and tongue begin to buzz — a genuine tingling numbness, closer to a mild electric current or a limb waking up than to any taste. It builds, plateaus and fades over several minutes. Nothing else in this catalogue does this, and no amount of any other spice reproduces it. |
| Aroma | Strong and distinctive: the fruits, leaves and branches are all intensely aromatic, and the fruit oil is dominated by limonene, with α-pinene, β-myrcene and linalool behind it. | Intensely citric — grapefruit and lemon peel — over a warm woody, faintly floral base. The citrus character is a family trait shared with the rest of the Rutaceae and is the first thing noticed on opening a fresh packet. |
Which should you buy?
Makwaen
Whole, crushed at the moment of use. The aroma is a volatile oil, and a ground powder loses it quickly.
Sichuan pepper
Buy whole husks and buy them small. This is the strongest whole-over-ground recommendation in the catalogue, because what fades is not merely the aroma but the effect: an old jar of ground Sichuan pepper is inert, and the usual conclusion drawn is that the spice is overrated rather than that the jar is dead. Sieve the black seeds out before grinding — they are grit and bitterness and nothing else — and toast the husks for half a minute first. Then test one on your tongue. Nothing else in this cabinet tells you so directly whether you have wasted your money.
Full detail on makwaen and sichuan pepper, including evidence grades and sources for every claim above.