Nigella Seeds and Black Seed Oil at Sainsbury's: What's Stocked
Looking for nigella seeds at Sainsbury's? Yes, they are on the shelf. When we checked sainsburys.co.uk on 1 October 2026, Sainsbury's own-label Nigella Seeds 48g (item code 7778295) was listed in the spices range, described as "Nigella seeds / black onion seeds". Black seed oil was a different story: searches for "black seed oil", "kalonji" and "black cumin seed oil" returned no black seed oil at all. This guide sets out exactly what we found, how to find the jar on the website, why the seeds and the oil are different purchases from the same plant, how Sainsbury's compares with Tesco, Morrisons and Waitrose, and what to check if it is the oil you are really after.
For our own oil, see our cold-pressed Ethiopian black seed oil.
The Short Answer
- Sainsbury's sells nigella seeds: its own-label Sainsbury's Nigella Seeds 48g, item code 7778295, sits under Food cupboard, then Herbs, spices and seasoning, then Spices on sainsburys.co.uk (checked 1 October 2026).
- The listing gives a single ingredient, "Black Onion Seeds", and lists the jar as "Packed in United Kingdom"; it does not state where the seed was grown.
- Sainsbury's did not list any black seed oil on 1 October 2026: a search for "black seed oil" returned 34 results, none of them black seed oil, and "kalonji" returned none.
- Search the site for "nigella" rather than "black onion seeds" or "kalonji"; in our check, only "nigella" and "onion seeds" brought up the jar.
- Nigella seeds are a cooking spice; black seed oil is the oil pressed from the same Nigella sativa seed, and the jar tells you nothing about an oil's thymoquinone content.
- Sidr & Stone publishes 2.67% thymoquinone, independently verified per batch by Analytice, an ISO-accredited French laboratory, with fulfilment in the UK, EU, and US.
Does Sainsbury's Sell Nigella Seeds?
Yes. On 1 October 2026 sainsburys.co.uk listed Sainsbury's Nigella Seeds 48g, item code 7778295, in its spices range. The product description reads "Nigella seeds / black onion seeds", the ingredients line reads simply "Black Onion Seeds", and the jar sits alongside the own-label cumin, fennel and caraway seeds.
A few details from the listing are worth knowing. The country of origin field says "Packed in United Kingdom", which tells you where the jar was filled rather than where the seed was grown. The storage advice is to keep it "in a cool, dry place, away from direct sunlight and strong odours", with the best-before date on the base of the jar. The jar and lid are marked as recyclable. The product had 19 customer reviews at the time of our check, and it was on a Nectar price offer running to 13 October 2026.
Finding it depends on the word you type. These are the searches we ran on sainsburys.co.uk on 1 October 2026:
| Search term (1 Oct 2026) | What came up |
|---|---|
| "nigella seeds" | Sainsbury's Nigella Seeds 48g first, then unrelated nuts and seeds |
| "nigella" and "nigella sativa" | One result each: Sainsbury's Nigella Seeds 48g |
| "onion seeds" | Sainsbury's Nigella Seeds 48g among the results |
| "black onion seeds" | Five results, not including the nigella seed jar |
| "kalonji" | No results |
| "black seed oil" | 34 results, none of them black seed oil |
Stock in an individual store can differ from the website, so the Sainsbury's app with your local store selected is the quickest way to check before you travel.
Does Sainsbury's Sell Black Seed Oil?
Not on the website when we checked. On 1 October 2026 a search for "black seed oil" on sainsburys.co.uk returned 34 results: cooking oils such as sesame, rapeseed and walnut oil, plus hair-care and cosmetic products with "black" or "seed" in the name. None was a black seed oil. Searches for "kalonji" returned nothing, and "black cumin seed oil" brought up ordinary cumin seed, which comes from a different plant, Cuminum cyminum, rather than any oil.
The one other place nigella turned up was in a snack. Jacob's On the Go Fibre Boost Black Seed & Quinoa Crackers list "Nigella Seed (2%)" among their ingredients. That is a cracker with a sprinkle of the seed in it, not a source of the oil.
None of this is a criticism of Sainsbury's. A supermarket range follows broad, steady demand, and black seed oil is still a specialist product in the UK. Our guide to where to buy black seed oil in the UK covers the health-food shops, online marketplaces and direct sellers where it is actually sold.
Nigella Seeds and Black Seed Oil: Same Plant, Different Products
Nigella seeds, black onion seeds, kalonji, black cumin and black seed are all common names for the seed of Nigella sativa, a flowering plant in the buttercup family. Despite "onion" in the name, it is not related to onions. Our explainer on kalonji, nigella and black cumin untangles the names in more detail.
The Sainsbury's jar is the whole seed, sold for cooking. It is used in naan and flatbreads, pickles, curries and roasted vegetables. Black seed oil is made by pressing those seeds, and it is usually taken by the teaspoon as a food supplement. So the two share a plant but not a purpose: a jar of whole seeds does not tell you how much oil you would get from it, or what that oil would contain. If you are weighing up which form suits you, our comparison of black seed oil and whole black seeds covers the practical differences.
One trap to avoid when shopping online: some marketplaces list "nigella" seed packets for the garden. The best known is love-in-a-mist, Nigella damascena, according to Kew's Plants of the World Online. Those packets are sold for sowing, not cooking, so stick to the spice aisle if you want seeds to eat.
How Sainsbury's Compares With Other UK Supermarkets
We ran the same two checks on three other UK supermarket websites on the same day. Sainsbury's is in good company on the seed and in typical company on the oil.
| Supermarket (websites checked 1 Oct 2026) | Nigella seeds found | Black seed oil found |
|---|---|---|
| Sainsbury's | Own-label Sainsbury's Nigella Seeds 48g | None |
| Tesco | Own-label Tesco Nigella Seeds 45g | Ten results (oils, softgels and hair-care products), all sold by third-party Tesco Marketplace sellers rather than Tesco itself |
| Morrisons | Schwartz Black Onion Seeds 42g jar | None |
| Waitrose | Waitrose Cooks' Ingredients Nigella Seeds 45g and Bart Nigella Seeds 45g | None in the results we reviewed |
The pattern is consistent: the big UK supermarkets stock nigella seeds as a spice, and none of the four sold black seed oil as its own stocked line on the day we looked. We go into each retailer in more depth in our articles on black seed oil at Tesco and black seed oil at Morrisons.
What to Check Before Buying Black Seed Oil Anywhere
If the seeds were never the goal and you came looking for the oil, the shop matters less than the label. Five checks tell you most of what you need:
- Ingredients: Nigella sativa seed oil on its own, with nothing blended in.
- Thymoquinone: a specific percentage, not just the word on the label.
- Proof: a Certificate of Analysis from a named, independent laboratory, tied to a recent batch.
- Pressing: cold-pressed and unrefined, because heat and refining degrade thymoquinone.
- Origin and packaging: where the seed was grown, and dark, light-protective glass.
The thymoquinone check matters more than it looks. Khaikin, Chrubasik-Hausmann, Kaya and Zimmermann, writing in Nutrients in 2022, measured thymoquinone in six black seed oils and five black seed oil capsule products bought commercially and found mean values ranging from 3.08 to 809.4 mg per 100 g. Products that look alike on a shelf can be very different inside. For the full method, see our guide to choosing a quality black seed oil.
Fair Objections, Answered
"Can't I just press my own oil from a jar of seeds?" You can buy the seeds and press them at home with a small oil press, and some people do. But a spice jar is sold for cooking, not for pressing, and a home press gives you no way of knowing the thymoquinone content of what comes out. If you want to use the seed in food, the Sainsbury's jar is a perfectly sensible buy.
"Why not just eat the seeds instead of taking the oil?" That is a fair choice, and plenty of people enjoy nigella seeds in cooking for their own sake. The seed and the oil are simply different forms; our seed-versus-oil comparison sets out the trade-offs honestly.
"A supermarket own-label is a safe bet, isn't it?" For a cooking spice, a supermarket own-label is a reasonable everyday choice. It just answers a different question. The Sainsbury's listing gives an ingredient, a pack size and storage advice; it is not designed to state where the seed was grown or what it contains, and nothing about it tells you anything about black seed oil.
Why Sidr & Stone
Sainsbury's sells the seed honestly as what it is, a spice. For the oil, the useful information is the measured number, the origin and the proof, and Sidr & Stone was built to put all three in one place.
- Sidr & Stone black seed oil is independently verified at 2.67% thymoquinone, per batch.
- Sidr & Stone's testing is carried out by Analytice, an ISO-accredited French laboratory, which issues a Certificate of Analysis.
- Sidr & Stone uses organically grown Ethiopian highland Nigella sativa, chosen after a 36-supplier evaluation.
- Sidr & Stone's oil is cold-pressed below 40°C to protect the heat-sensitive thymoquinone.
- Sidr & Stone's oil is 100% pure, a single ingredient with nothing added.
- Sidr & Stone's oil is unrefined, preserving the oil's natural integrity.
- Sidr & Stone bottles its oil in matte black UV-protective glass.
- Sidr & Stone black seed oil is halal certified.
- Sidr & Stone gives 10% of profits to charity.
- Sidr & Stone has fulfilment in the UK, EU, and US.
We will not tell you Sidr & Stone is the strongest or the best — that would be the very claim this article warns against. What we will say is that our thymoquinone figure is 2.67%, independently verified per batch, and the evidence is there to see.
Frequently Asked Questions
Does Sainsbury's sell nigella seeds?
Yes. On 1 October 2026 sainsburys.co.uk listed Sainsbury's Nigella Seeds 48g (item code 7778295) in its spices range, described as "Nigella seeds / black onion seeds". Store stock can vary, so check the app for your local branch.
Where are nigella seeds in Sainsbury's?
Online, they sit under Food cupboard, then Herbs, spices and seasoning, then Spices. In store, look among the own-label jars of whole spices such as cumin, fennel and caraway seed.
Does Sainsbury's sell black seed oil?
Not when we checked. On 1 October 2026 a search for "black seed oil" on sainsburys.co.uk returned 34 results, none of them black seed oil, and "kalonji" returned no results.
Are black onion seeds the same as nigella seeds?
Yes. Sainsbury's lists its jar as "Nigella seeds / black onion seeds", and both names refer to the seed of Nigella sativa, which is not related to the onion.
How does Sidr & Stone compare with what Sainsbury's sells?
They are different products. Sainsbury's sells whole nigella seeds as a cooking spice; Sidr & Stone sells a cold-pressed, unrefined black seed oil with 2.67% thymoquinone independently verified per batch by Analytice.
Can I get the oil from Sainsbury's nigella seeds?
Only by pressing them yourself, and a spice jar is sold for cooking rather than pressing. A home press gives you no measure of the oil's thymoquinone content.
Where can I buy black seed oil in the UK if not at Sainsbury's?
Health-food shops, online marketplaces and direct sellers all carry it; our UK where-to-buy guide compares the options. Sidr & Stone sells direct from its own website, with fulfilment in the UK, EU, and US.
Is black seed oil a medicine?
No. Black seed oil is a food supplement, not a medicine. It has a long traditional history and an interesting body of research around thymoquinone, and can be a worthwhile part of a healthy routine — but it does not cure diseases and is not a substitute for medical care. Be cautious of any black seed oil marketed with specific disease-cure claims.
Final Thoughts
If you want nigella seeds for cooking, Sainsbury's has you covered: its own-label 48g jar was listed on 1 October 2026, and the quickest way to find it online is to search "nigella". If you came for black seed oil, Sainsbury's did not list any, and neither did Morrisons or Waitrose; Tesco's only results came from third-party marketplace sellers.
That is normal for a specialist product, and it moves the question from which shop to which oil. Look for a single ingredient, a stated thymoquinone figure, a named laboratory's certificate, cold-pressing and a stated origin. For a brand-by-brand view, our best black seed oil UK guide goes further.
Our cold-pressed Ethiopian black seed oil — independently verified at 2.67% thymoquinone — is available now, with fulfilment in the UK, EU, and US.
Our black seed oil is pressed from organically grown Ethiopian highland Nigella sativa, but it is not certified organic: formal organic certification is hard to obtain in the Ethiopian highlands, so we tell you how the seed is grown rather than claim a certificate we do not hold.
Shop Sidr & Stone Cold-Pressed Ethiopian Black Seed Oil — Verified 2.67% Thymoquinone →
Disclaimer: This article describes Sainsbury's, Tesco, Morrisons and Waitrose website listings as we found them on 1 October 2026; ranges, offers and in-store stock vary by branch and change often, and readers should check current sources. References to Sainsbury's and the other retailers and brands named describe general retail observations and are not affiliated with or endorsed by them. Comparisons are made in good faith and in fair terms. Black seed oil is a food supplement, not a medicine, and is not a substitute for medical treatment of any condition. For any health concern, consult a qualified medical professional.