Ogiri
Also known as ogiri egusi, ogiri igbo, ogiri ugu, fermented melon seed, fermented castor seed
Quick answer
A fermented paste of oil-rich seeds — melon, castor or fluted pumpkin — from southern Nigeria, pungent and cheesy-savoury, used in small amounts to season soups such as egusi and ofe onugbu. It is the oilseed counterpart of dawadawa.
- Tastes of
- savoury, pungent, cheesy, fermented, umami
- Heat
- Scoville does not apply
- If you have none
- Dawadawa — see the limits
Other names
What this spice is called elsewhere, and where the translation is not clean.
ogiri
Igbo — South-eastern Nigeria
The same word covers ferments of several different seeds. Ogiri igbo is castor seed, ogiri egusi melon seed and ogiri ugu fluted pumpkin seed, and a market seller may mean any of them.
ogiri
Yoruba — South-western Nigeria
Not iru. Iru is the Yoruba name for fermented locust bean — dawadawa — a different product from a different seed.
Flavour and aroma
Intensely savoury, from the free amino acids released in fermentation, with an oily richness from the seed.
Very strong: pungent, ammoniacal and cheese-like. Much of the ammonia cooks off in a soup.
Grey to dark brown paste or dried pieces, greyed by the ash.
A soft, oily paste, or crumbly dried pieces.
Heat
Pungency scale: none — this spice is not pungent
No heat.
- Free amino acids — Released by bacterial proteases, with glutamic acid prominent among them; the savouriness.
- Ammonia — The sharp smell of the fresh product and the cause of its high pH.
Pairings
Ranked by how well established the combination is, with the reason and the caveats attached.
Foods
Beef
StrongThe meat of a Nigerian soup — beef, often with stockfish — is where ogiri’s savouriness goes; a small piece deepens the whole pot.
Spinach
StrongLeaf soups — egusi with ugu or other greens, bitterleaf soup — are where ogiri is dissolved to give depth; the fermented savouriness balances the bitter and grassy greens.
How: In egusi and leaf soups
- The greens of the traditional soups are ugu and bitterleaf; spinach is the stand-in available abroad
If you have no ogiri
What to use instead, and — more usefully — where each replacement stops working.
Dawadawa
Good matchThe same kind of alkaline-fermented seed condiment, doing the same savoury job. Dawadawa is drier and more ammoniacal, ogiri oilier and more cheese-like; in a soup the difference is modest.
| Flavour | Aroma | Colour | Heat |
|---|---|---|---|
| close | partial | close | n/a |
Works for
- Soups and stews that call for a small piece of ogiri
Does not work for
- Cooks who know the soup with ogiri will notice the different smell
Preparation and use
Use a small piece, crumbled or dissolved into the soup early so that the ammonia cooks off. Start with less than seems reasonable.
A soup condiment of southern Nigeria, used in small amounts in egusi and leaf soups, much as dawadawa is used in the north.
- boiling — Dissolved into a soup early, which drives off the ammonia and leaves the savouriness in the liquid.
Storage and freshness
| Form | Good for | Conditions | Fridge |
|---|---|---|---|
| Paste | Not established | Refrigerated and tightly wrapped — the smell travels. | Yes |
| Dried whole | Not established | Cool, dry and sealed. | No |
It should smell strongly fermented and cheese-like. Fuzzy mould or a putrid smell means spoilage.
- Fuzzy mould
- A putrid or rancid smell
- Spoilage of the moist paste if kept warm
- Rancidity of the seed oil over time
Quality is not the same as safety
A strong smell is correct. Mould, or a moist paste left warm for days, is a safety matter and should be discarded.
Forms
These forms differ enough to need separate answers: treating them as interchangeable produces a dish that is wrong.
Ogiri paste
The soft, fresh product in leaf parcels.
Dried ogiri
Sun-dried pieces, the form that keeps and travels.
Species, types and grades sold under this name
Different species, origin types and processing types are different questions — whether it is the same plant, the same crop or the same product — and each is labelled as the kind of difference it is.
Ogiri egusi
Different speciesCitrullus lanatus (egusi melon types)
Sold as fermented melon seed
Made from dehulled melon seeds boiled for two to three hours, ground to a paste with ash from burnt palm bunch, wrapped in leaves to ferment until the aroma develops, then sun-dried.
Fermentation raises the pH sharply and frees amino acids, among which glutamic acid is prominent — the source of its savouriness.
Ogiri igbo
Different speciesRicinus communis L.
Sold as fermented castor seed
Made from dehulled castor seeds wrapped in banana leaves and boiled for six to eight hours, left to ferment for four to six days, then ground with palm-bunch ash and fermented again in leaf parcels.
Raw castor seed is poisonous, and this is the one ogiri whose substrate matters for safety as well as flavour; see the safety note.
Ogiri ugu
Different speciesTelfairia occidentalis Hook.f.
Sold as fermented fluted pumpkin seed
Made from the seeds of fluted pumpkin, the leaf vegetable ugu, fermented in the same way for about five days.
Commonly confused with ogiri
Direct comparisons, each with the difference that actually changes what you cook.
Botany
The three seeds ogiri is made from. Egusi melons are grown for their seeds and their species placement within Citrullus is debated; the literature on ogiri often writes Citrullus vulgaris.
Cucurbitaceae and Euphorbiaceae
Melon and fluted pumpkin are cucurbits; castor is a spurge. The product is defined by the process, not the plant.
The dehulled seed kernels, cooked and fermented.
Commonly confused with
The fermented locust bean, made the same way by the same kind of bacteria from a legume rather than an oilseed. Dawadawa is drier and more ammoniacal; ogiri is softer, oilier and more cheese-like. Both season soups, and Nigerian cooks do not treat them as the same thing.
How it is grown
The plant, how it is propagated and farmed, what threatens the crop, and where it is produced now. Crop diseases here are plant health, not food safety.
Not a crop. A fermented seasoning made from the seeds of three unrelated crops; the product has no single plant, and its fermentation is described with the fermented seasonings.
Where it comes from and how it is made
Southern Nigeria, where it is made by Igbo and Yoruba households and small producers.
- Nigeria (South-east and south-west) — origin. Made and sold throughout southern Nigerian markets.
- Dehulling and boiling — Seeds are shelled and boiled — two to three hours for melon, six to eight for castor.Why: To soften the seed and, for castor, as part of making it edible at all.
- Fermentation — The cooked seeds are wrapped in leaves and left in a warm place for several days; Bacillus species dominate.Why: Protein breakdown, which produces the savouriness and the smell.
- Grinding with ash — Ground to a paste with ash from burnt palm bunch, which greys it.
- Finishing — Wrapped in small leaf parcels to develop further, then often sun-dried for keeping.
Fermentation
Ogiri
Alkaline fermentation · Southern Nigeria · also fermented melon seed condiment
Melon seeds, boiled to loosen the thin seed coat, dehulled, boiled again and wrapped in leaves to ferment; in southern Nigeria they are sometimes boiled with particular leaves, which producers say give a desired flavour.
From ogiri made in the laboratory, the study isolated Bacillus subtilis, Corynebacterium species, Lactobacillus acidophilus and Staphylococcus aureus by culture. From a sample bought in a market it isolated Bacillus subtilis, Staphylococcus aureus, Enterobacter species, Escherichia coli and Candida albicans. No starter culture was used.
In the laboratory process reported, the seeds were boiled for 30 min, dehulled, boiled for a further 30 min, wrapped in leaves of Thaumatococcus daniellii (or in foil or a closed container for comparison) and held at about 38 °C for 120 h, after which fermentation was ended by drying. The finished condiment had a pH above 7 in every laboratory sample; the market sample stood at 6.36.
Used in small amounts to flavour soups and stews; in the study’s tasting it was stirred into a stew and boiled for about two minutes.
Total bacterial counts ranged from 1.0 × 10⁵ CFU/ml in the sample fermented in a closed container to 8.4 × 10⁵ in the market sample, whose bacterial and fungal counts were significantly higher than those of the laboratory samples. Staphylococcus aureus was isolated from laboratory and market ogiri alike, and Escherichia coli from the market sample. The authors cite earlier reports that fermenting and packing the condiment in leaves encourages contamination by unwanted microorganisms and shortens its keeping time.
What goes into it
- Fermented: Melon seeds (Boiled, dehulled and boiled again before being wrapped to ferment. The catalogue holds the seasoning, not the seed.)
Organisms studies found, and how
- Lactic acid bacteria: Lactobacillus acidophilus — detected, grown in culture. The laboratory-made ogiri only. Sources: Enhancing the Nutritional and Microbiologic… (Abstract and Results)
- Bacillus and its relatives: Bacillus subtilis — detected, grown in culture. Ogiri made in one laboratory and one sample bought in a market. Sources: Enhancing the Nutritional and Microbiologic… (Abstract and Results)
- Other bacteria: Staphylococcus aureus — detected, grown in culture. Ogiri made in one laboratory and one sample bought in a market. Sources: Enhancing the Nutritional and Microbiologic… (Abstract and Results)
What is not established: One laboratory batch series and one market sample, with organisms identified by culture only. The study did not measure toxins, biogenic amines or aroma compounds. This account covers ogiri made from melon seed only.
Buying and quality
- From a Nigerian grocer, where it is sold in leaf parcels or dried.
- Ask which seed it is made from; the name alone does not say.
- A strong fermented smell is correct; mould is not.
Safety
Safety statements on SpiceHQ must cite evidence — they cannot be published on editorial judgement.
Raw castor seed
Applies to: Castor-seed ogiri (ogiri igbo)
Castor seed contains ricin, one of the most toxic plant proteins known, and raw castor seed is poisonous. Ogiri made from castor relies on processing — the seeds are dehulled and boiled for six to eight hours before fermentation — and ricin, being a protein, is inactivated by thorough heating. This is recorded as why the traditional process is what it is, not as an assurance about any particular batch; castor seed should never be used raw or undercooked.
Not among the substances that must be declared as allergens under EU Regulation 1169/2011 Annex II or under the United States major food allergen rules. That is a statement about labelling law and not about whether allergy occurs: allergic reactions to spices are documented in the clinical literature and are simply not a labelling category. Where a ground spice presents an allergen risk it is usually through adulteration or shared processing equipment rather than through the plant itself.
History and trade
Part of a family of fermented seed condiments described in the Nigerian food-science literature as long established in southern Nigerian cooking, made by households and small producers and increasingly sold through informal markets.
Sold in parcels through Nigerian markets and informally beyond.
Culture
Recorded by tradition rather than merged into one narrative — these are genuinely different practices.
Igbo and Yoruba cooking, southern Nigeria
Among the Igbo and Yoruba of southern Nigeria.
A small piece of ogiri is dissolved into soups — egusi, ofe onugbu (bitterleaf soup) and others — to give depth, in the way dawadawa is used further north. Its smell is strong enough that it is used sparingly and often divides opinion outside the region.
- In egusi soup
- In bitterleaf soup
- Dissolved early into soups
Also documented among the Igbo: Calabash nutmeg, Scent leaf, Uziza.
What it is called
- Igbo: ogiri igbo
- Igbo: ogiri egusi
- Igbo: ogiri ugu
What we do not know
Published openly. A gap we have named is more useful than a gap we have filled with plausible prose.
Not yet established for ogiri:
- Archaeological evidence
- Historical timeline
- Ceremonial use
- Traditional medicinal context
- Regulatory limits
- Traditional uses