Grains of Selim (Selim pepper): Flavor, Cooking Use and Health Facts
Grains of Selim are peppery, resinous and a little bitter and used in West African soups, sauces and coffee; we found no human studies, and rat studies hint at lower platelet counts with long, high use.
Content last updated . This page has not been medically reviewed.
In the kitchen at a glance
Flavor:Hot / pungentWarm / woodyBitter
Aroma: Resinous and woody, often compared to cubeb pepper mixed with nutmeg, with a smoky note when dried over fire.
Used in: soups and stews, grilling and rubs, tea and drinks, rice and grains
Usual amount in food: We found no source that gives a usual amount, and USDA has no entry for this spice.
What it is
Grains of Selim are the dried fruits of Xylopia aethiopica, a tall evergreen tree of the custard-apple family. [1][2][3] They are also called Selim pepper, Senegal pepper, Ethiopian pepper, Kani pepper, and, in Ghana, hwentia. [1][2] The fruit is a small, twisted, dark brown pod, 2.5 to 5 cm long, holding 5 to 8 kidney-shaped seeds. [2] The tree grows in West, Central and Southern African forests. [3] Names such as "African pepper" and "Guinea pepper" are vague, because they can also mean other spices. [1] It is not a true pepper. [4]Flavor and aroma
The pod hull carries the aroma. The seed inside is not aromatic and tastes bitter when broken. [2][4] Katzer describes the flavor as aromatic, fairly sharp and slightly bitter, like cubeb pepper and nutmeg together. [2] A food writer adds woody, smoky, floral and slightly minty notes. [4] The fruit's essential oil contains compounds such as beta-pinene, cineol and terpineol, which are typical of resinous, camphor-like smells. [2] Much of the spice is smoked while drying, which adds a smoky edge. [1][2]How it is used in cooking
Cooks lightly crush the dried pods, often tie them in a bundle, simmer them in soups or stews, and take them out before serving. [1] Seeds can also stand in for pepper. [3]- Ghana: an ingredient in Ga shito, a spicy black pepper sauce, and in the drink shitodaa. Ewe cooks use it in soups, porridges and drinks such as bisap. In the north it flavors millet, sorghum or maize porridge. [1]
- Senegal: green pods are smoked until sticky, or pounded into a paste. Ground smoked pods are used as a fish rub. [1] In café Touba, it goes into the coffee near the end of roasting. [1]
- Northern Cameroon and Nigeria: added to tea with dried ginger and cloves. [1]
- Tea and drinks: pods can be ground or steeped, and added to hibiscus drinks. [4]
A food writer advises removing the fibrous hull bits before grinding and toasting or infusing it first to bring out the oils. [4] She says nothing replaces it, and offers black cardamom as the nearest option. [4] The sources we read give no rule on when to add it beyond the simmer-and-remove method above.
Normal food amounts
| Measure | Grams | Source |
|---|---|---|
| 1 teaspoon | Not found | USDA SR Legacy has no entry for this spice |
| 1 tablespoon | Not found | USDA SR Legacy has no entry for this spice |
| Typical recipe amount | Not found | We opened no source that states one |
We did not invent nutrient numbers. USDA SR Legacy has no entry for grains of Selim, so we cannot say what a teaspoon provides. A spice used in small amounts is mostly flavor.
Buying, storing and preparing
- Forms: whole dried pods, smoked pods, ground powder and pastes. [1][4] Katzer says the spice is rarely found outside producing countries. [2]
- Name mix-ups: Xylopia striata has larger pods and is also used in Senegal. [1] Check the Latin name on the label.
- Storage: keep it airtight and away from strongly scented spices, because the pods absorb other smells. [4] We found no shelf-life figure.
- Contamination and adulteration: the sources we read do not describe problems for this spice.
Health: what research says
Eating a spice in cooking is different from taking concentrated products. Almost all the research on this plant was done in cells or animals, using strong extracts.Food amounts vs supplements
| In normal cooking | In supplements and extracts | |
|---|---|---|
| Typical amount | No usual amount found | No official amount found |
| What studies mostly used | We found no study of the spice in food | Ethanol extracts in cells, mice and rats [6][7][8] |
| What we can say about benefit | Nothing from human research | Nothing from human research |
| Main safety limit | None established | A 90-day rat study found lower platelet counts; long-term high use calls for caution [6] |
What the evidence shows
| Use | What the sources found | Strength of evidence | Form and population |
|---|---|---|---|
| Pain, inflammation, anxiety | A review of xylopic acid, a compound in the fruit, calls effects in animals promising, including anxiety-like behavior in mice. [5] | Lab or animal only | Isolated compound and extracts; mice and cells [5] |
| Cancer cells | A 70% ethanol extract slowed growth of several cancer cell lines, and one active compound was found. The authors also note a Nigerian screen reporting mutagenic activity, which raises a question about use as a spice. [8] | Lab or animal only | Extract in cell culture [8] |
| Mood with antidepressants | In mice, extract and xylopic acid acted with three antidepressants, and lowered blood levels of one of them (imipramine). [7] | Lab or animal only | Extract in mice [7] |
| Any health benefit from food amounts | No study found | Insufficient evidence | Food amounts |
Official statements
We found no opinion from EFSA, FDA, WHO or EMA that we could open. A US organic-standards petition about Ethiopian pepper exists, but its page did not load for us. We make no claim about its content.Related pages
Health connections for Grains of Selim
What research links to this spice, and how strong the evidence is. Most studies use concentrated extracts or doses far above what you eat; each card says which.
Pain and inflammation in animals
Lab or animal research onlyA compound in the fruit, xylopic acid, reduced pain and inflammation in animal studies.
Supplements: Extract and isolated compound only; no study of food amounts and none in people.
Anxiety-like behavior in mice
Lab or animal research onlyXylopic acid reduced anxiety-like behavior in mice and showed calming effects on the nervous system.
Supplements: Not tested in people; not a food-amount finding.
Cancer cell growth in the lab
Lab or animal research onlyA strong ethanol extract slowed the growth of several cancer cell lines, and one active compound was identified.
Supplements: Lab finding with a concentrated extract; no animal or human testing in that paper.
Connected topics
Open a group to see how each topic connects and how strong the evidence is.
Root causes (1)
- Medication Side EffectsDocumented risk
In mice, the extract changed how three antidepressants acted and lowered imipramine blood levels; unknown in people.
Documented risks and interactions (3)
- Low platelets in long rat study. In a 90-day rat study of the dried fruit, platelet counts fell at 75, 150 and 300 mg per kg a day.
- Interaction with antidepressants in mice. In mice, the extract and xylopic acid acted together with three antidepressants and lowered the blood level of imipramine.
- Reproductive effects of xylopic acid in mice. A review says harmful effects of xylopic acid on the reproductive system of mice are well documented.
Frequently asked questions
What do grains of Selim taste like?
Pungent, resinous and a little bitter, like cubeb pepper with nutmeg. The hull carries the aroma, and smoked pods taste smokier. [2][1]
How much is normal?
We found no source for a usual amount, and USDA has no entry. Recipes treat it as a flavoring simmered in a pot and removed. [1]
Is it safe in pregnancy?
The sources we read do not say. Mouse studies of one compound in the fruit report effects on the reproductive system. [5] Ask your midwife or doctor.
Can I take it with medicines?
No human data exist. In mice, it changed how three antidepressants worked and lowered the blood level of one. [7] Ask a pharmacist if you take antidepressants.
Does it have health benefits?
Cell and animal studies report effects, but we found no human trial. [5][8] Do not treat it as medicine.
More details: evidence, limits and cautions
The details behind this page: cautions, limits of the evidence and where sources disagree. Open any note to read it.
Safety note at a glance
Safety in more detail
- Medicines: in mice, the fruit extract and xylopic acid interacted with imipramine, fluoxetine and venlafaxine; one result was less imipramine in the blood. [7] The authors of the xylopic acid review ask for drug-interaction studies because the fruit is eaten so widely. [5] No human data. If you take antidepressants and use it heavily or as a supplement, ask a pharmacist.
- Pregnancy: the sources we read do not describe safety in pregnancy. A review notes harmful effects of xylopic acid on the reproductive system of mice. [5] Whether this applies to food amounts in people is unknown.
- Breastfeeding: the sources we read do not describe it.
- Children: the sources we read do not describe it.
- Allergy: the sources we read do not describe allergy.
- Liver and kidney: the 90-day rat study reported no significant changes in most blood chemistry or in organ tissue, and a small drop in bilirubin in males at the top dose. [6]
- Surgery: the sources we read give no surgery warning. Platelet counts matter for bleeding, so tell the surgical team about any supplement. That last point is our reasoning, not a source claim. [6]
- Quality and contamination: the sources we read do not describe any.
- Amounts that cause trouble: in rats, 75, 150 and 300 mg per kg of body weight a day for 90 days lowered platelets in both sexes; a single dose of 2000 mg per kg caused no deaths. [6] The rat doses are for a dried-fruit preparation and cannot be turned into a human amount. The authors suggest long-term use may cause low platelets and anemia at higher doses. [6] The anemia claim appears in their conclusion, not in the results we could read.
References
- Wikipedia — Grains of Selim (cites Oxford Companion to Food and Katzer's Spice Pages). https://en.wikipedia.org/wiki/GrainsofSelim (accessed 2026-10-24)
- Gernot Katzer — Spice Pages: Negro pepper (Xylopia aethiopica). http://www.gernot-katzers-spice-pages.com/engl/Xylo_aet.html (accessed 2026-10-24)
- World Agroforestry (ICRAF) — Agroforestree Database: Xylopia aethiopica. https://apps.worldagroforestry.org/treedb2/speciesprofile.php?Spid=18145 (accessed 2026-10-24)
- TODAY — What are grains of Selim? Everything you need to know about this versatile spice. https://www.today.com/today/amp/tdna245314 (accessed 2026-10-24)
- Oge EN et al. — A review of pharmacological effects of xylopic acid. Int J Basic Clin Pharmacol 2020; abstract only. https://www.ijbcp.com/index.php/ijbcp/article/view/4059 (accessed 2026-10-24)
- Nguedia MY et al. — Acute (14-day) and subchronic (90-day) toxicity evaluation of the dried fruit spice Xylopia aethiopica in male and female Wistar rats. J Toxicol 2026; abstract read via Europe PMC. https://pubmed.ncbi.nlm.nih.gov/42179896/ (accessed 2026-10-24)
- Ndu CC et al. — Investigation of herb-drug interactions between Xylopia aethiopica, its principal constituent xylopic acid, and antidepressants. Adv Pharmacol Pharm Sci 2024; abstract read via Europe PMC. https://pubmed.ncbi.nlm.nih.gov/38826835/ (accessed 2026-10-24)
- Choumessi AT et al. — Characterization of the antiproliferative activity of Xylopia aethiopica. Cell Div 2012;7:8. https://pmc.ncbi.nlm.nih.gov/articles/PMC3317441 (accessed 2026-10-24)