Glossary

What is kalonji (nigella seeds)?

Kalonji, also called nigella seeds or black seed, are tiny, matt black, teardrop-shaped seeds with a mildly bitter, onion-like taste. You'll find them on naan, in achaar, in Bengali panch phoron and in many sabzis.

Written by Poshan Labs. Sources are named on the page. Last updated 26 October 2026.

Kalonji: tiny, matt black, teardrop-shaped seeds with a mildly bitter, onion-like taste.

Kalonji and your health

As a spice, kalonji adds flavour and a little crunch to everyday food.

Black seed oil and capsules:

  • They are promoted for everything from diabetes to skin and joint problems.
  • The evidence so far comes from small studies and isn't strong enough to support using them for any specific condition.

Supplements are a different matter from a sprinkle in your food:

  • they may increase bleeding in people on blood thinners
  • they can cause stomach upset or rashes
  • they aren't advised in pregnancy

How to have kalonji

Enjoy kalonji the way Indian kitchens always have, and these everyday cooking amounts are simply part of food:

  • sprinkled on parathas and naan
  • crackled in a tadka for aloo or kaddu
  • added to pickles

If you're thinking about black seed oil or capsules, talk to your doctor first, especially if you:

  • take medicine for diabetes or a blood thinner
  • have surgery coming up

Never use it in place of treatment your doctor has prescribed.

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