Roasted Sichuan Pepper
Roasted Sichuan pepper is the dried pericarp of Zanthoxylum bungeanum or Zanthoxylum schinifolium that has been dry toasted before sale, either as whole husks or ground to a powder. It is not a true pepper and contains no piperine or capsaicin; its defining effect is a tingling numbness on the lips and tongue produced by hydroxy alpha sanshool and related alkylamides, which act on touch receptors rather than on the pain and heat receptors that chilli and black pepper stimulate.
Roasting changes the material in two ways. Residual moisture is driven off, which makes the brittle husks easy to grind and slows the loss of quality in storage, and the heat drives Maillard and terpene rearrangement reactions that add a warm, nutty and slightly citrus top note over the raw limonene and linalool character of the untoasted husk. The sanshools themselves are heat sensitive, so commercial roasting is short and closely controlled; over roasting removes the numbing effect the ingredient exists to deliver.
Volatile oil content, typically between two and four percent, sets aroma strength, while sanshool content sets the numbing intensity. The sanshools are lipophilic and poorly soluble in water, so the ingredient releases its full effect only into a fat carrier or when eaten directly as a powder.
We source bulk Roasted Sichuan Pepper from top China manufacturers for our partners. The manufacturer is in Henan. A smaller requirement can ship in a combined container with other ingredients.
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- Function
- Flavours and Aromas
Specifications
| Item | Specification |
|---|---|
| Appearance | Reddish brown split husks or fine powder, characteristic roasted aroma |
| Volatile Oil | Not less than 2.0 ml per 100 g |
| Moisture | Not more than 10.0% |
| Total Ash | Not more than 8.0% |
| Acid Insoluble Ash | Not more than 1.5% |
| Seed and Stem Content | Not more than 5.0% |
| Extraneous Matter | Not more than 1.0% |
| Particle Size, powder grades | 98% through 40 mesh |
| Aflatoxin B1 | Not more than 5 ug/kg |
| Lead | Not more than 3.0 mg/kg |
| Arsenic | Not more than 1.0 mg/kg |
| Total Plate Count | Not more than 100000 cfu/g |
| Yeast and Mould | Not more than 1000 cfu/g |
| Salmonella | Absent in 25 g |
Common Markets Grades
Trade grades separate red pepper from green pepper. Red grades from Zanthoxylum bungeanum give a heavier, warmer aroma and the strongest numbing effect, while green grades from Zanthoxylum schinifolium are brighter and more citrus led with a sharper, faster numbing onset. Within each type the material is graded on the proportion of open husk to closed husk, on the amount of seed, stem and foreign matter remaining after sorting, and on colour uniformity.
Physical form runs from whole roasted husk through coarse crushed material to fine powder at 40, 60 or 80 mesh, with finer meshes used where the particle must not be visible in a sauce. Powders are quoted on volatile oil content and, in the better specifications, on sanshool content. Seedless or low seed grades command a separate specification because the seed carries no aroma and dilutes the analysis. Sterilised grades, treated by steam or irradiation depending on the destination market, are offered where the microbiological limits of a ready to eat application apply.
Applications
- Sichuan and Chongqing hot pot bases, fried into beef tallow so the sanshools transfer into the fat phase
- Spicy and numbing seasoning oils for instant noodles and dressed cold dishes
- Dry rubs and marinades for braised and roast meat, where the roasted note survives cooking
- Compound seasoning powders such as five spice and thirteen spice blends
- Cured and fermented sausage, contributing aroma and a degree of antioxidant protection to the fat
- Prepared and frozen ready meals in the mala direction, dosed as a fine powder for even distribution
- Savoury snack seasonings for extruded snacks and coated nuts
- Pickling and brining liquors for vegetables and offal
- Feedstock for Sichuan pepper oleoresin and essential oil extraction
China Manufacturers of Roasted Sichuan Pepper
Top Roasted Sichuan Pepper manufacturers in China.
Company names and logos are the property of the manufacturers themselves. They are listed here because our own directory records them as producing this ingredient. A listing is not an endorsement by them, and we do not represent them or speak on their behalf.
Regulatory Status
Sichuan pepper is treated as a spice rather than as a food additive, so it has no E number and no additive authorisation is required. In the United States it falls within the spices and other natural seasonings and flavourings recognised as generally recognised as safe under 21 CFR 182.10, and the corresponding listing for essential oils and natural extractives covers its oleoresin and essential oil. Imported spices are subject to the preventive controls and foreign supplier verification requirements, and consignments are screened for filth, mould and Salmonella.
In the European Union spices are ordinary foods governed by general food law rather than by the additives regulation, with maximum levels set separately for heavy metals, mycotoxins and pesticide residues; irradiated spices may be placed on the market only where the treatment is authorised in the destination state and declared on the label. Codex addresses dried spices through the Committee on Spices and Culinary Herbs and through its general codes of hygienic practice for spices and dried aromatic plants, which set the sampling and hygiene expectations buyers apply to this material.
Manufacturing Process
Husks are harvested at full colour in late summer, then sun dried or hot air dried until the pericarp splits and releases the black seed. The dried material passes through de-seeding and destemming on a combination of screens and air classifiers, since seed and stalk carry no volatile oil and depress the analysis. Cleaning includes gravity separation for stones and a metal detector or magnet before heat is applied.
Roasting is carried out in a rotary drum or a continuous belt roaster at a moderate temperature for a short residence time, long enough to develop the toasted aroma and bring moisture below about ten percent but short enough to retain the sanshools. The roasted husk is cooled quickly in a forced air cooler to stop the reaction, then sorted again by colour and size. Material sold whole is packed at this point; powder grades are milled, often with chilled or cryogenic grinding to prevent the frictional heat of the mill from driving off volatile oil, sieved to the target mesh, passed over a metal detector and packed in foil laminate or lined drums to exclude light, oxygen and moisture.
