· By ODM Masala
Ajwain vs Saunf: The Real Difference & When to Use Each
Quick answer: Ajwain (carom seeds) and saunf (fennel seeds) are two different seeds with opposite personalities: ajwain is sharp, hot and thyme-like, while saunf is sweet, cooling and licorice-like. Use ajwain in small amounts for pakoras, parathas and heavy dals, and use saunf more freely in pickles, sweets, chai and as an after-meal mouth freshener.
Both seeds sit side by side in almost every Indian kitchen, both are small and ridged, and both are often grabbed after a big meal. That is why so many people mix them up. Here is how to tell them apart and when to reach for each one.
Also known as: Ajwain is carom seeds in English (also called bishop's weed; omam in Tamil and Malayalam, vamu in Telugu, owa in Marathi, jowan in Bengali). Saunf is fennel seeds in English (badi saunf; perunjeeragam in Tamil, sompu in Telugu, badishep in Marathi, mouri in Bengali).
What Is the Real Difference Between Ajwain and Saunf?
They come from two different plants. Ajwain seeds are tiny, greyish-brown and strongly aromatic, with a bite that can almost numb the tongue if you chew them raw. Saunf seeds are longer, pale green to yellowish, and taste naturally sweet with an anise-like note.
The simplest rule: ajwain is a savoury power spice, saunf is a sweet, gentle spice. A pinch of ajwain changes a whole dish, while saunf can be used by the teaspoon without overpowering it.
Ajwain vs Saunf: Side-by-Side Comparison
| Point | Ajwain (Carom Seeds) | Saunf (Fennel Seeds) |
|---|---|---|
| Look | Tiny, oval, greyish-brown, ridged | Longer, slim, green to pale yellow |
| Smell | Strong, thyme-like, pungent | Sweet, fresh, licorice-like |
| Taste | Sharp, slightly bitter, hot | Sweet, mild, cooling |
| Best for | Pakoras, parathas, puris, mathri, chole, kadhi | Pickles, sweets, chai, kashmiri gravies, mukhwas |
| How much (for 4) | 1/4 to 1/2 tsp | 1 to 2 tsp |
| Eaten raw? | Rarely, it is too strong | Yes, often chewed after meals |
When Should You Use Ajwain?
Ajwain shines in fried and flour-heavy food, where its sharp aroma cuts through richness. Good places to use it:
- Pakora and bhajji batter: a pinch of crushed ajwain in besan batter is the classic street-style touch.
- Parathas, puris and mathri: rub ajwain between your palms over the dough to release its oils.
- Dal and kadhi tadka: add it to hot ghee for a few seconds before the other spices.
- Chole and rajma: a small pinch balances heavy, slow-cooked beans.
- Fish and paneer marinades: a little ajwain gives an earthy, tandoori-style aroma.
For more ideas, see our guide on how to use ajwain in everyday cooking.
When Should You Use Saunf?
Saunf brings sweetness and freshness. It works best where you want a gentle, rounded flavour:
- After-meal mukhwas: plain or lightly roasted saunf is chewed across India after food.
- Pickles (achar): crushed saunf is a key flavour in mango and mixed achar.
- Sweets and drinks: thandai, kheer and some ladoos use ground saunf.
- Kashmiri and Bengali dishes: ground saunf is part of many gravies and of panch phoron.
- Chai: a pinch of saunf with elaichi makes a soothing evening cup.
Saunf comes in two sizes. Mahin saunf (small, sweet) is best for chewing and drinks, while mota saunf (bold, thicker) suits cooking and pickles. Our mota vs mahin saunf guide explains the difference in detail.
Can You Use Ajwain Instead of Saunf (or the Other Way Round)?
Not really. Swapping them 1:1 will spoil most dishes. A teaspoon of ajwain in place of saunf would make an achar or a sweet bitter and harsh, and saunf in place of ajwain would make a pakora taste oddly sweet. If you run out, it is better to skip the spice than to replace it.
They can, however, work together. Many households roast ajwain and saunf with a little kala namak as a home-style mouth freshener, and both appear together in some pickles. If you are also confused between ajwain and cumin, read ajwain vs jeera.
How to Buy and Store Both
Buy whole seeds, not powder, so the aroma lasts longer. Good ajwain should smell strong the moment you open the pack; good saunf should look evenly green and smell sweet. Store both in airtight glass jars, away from the stove and sunlight, and use within about a year. ODM spices are handpicked and packed whole with no artificial colours, no fillers and no preservatives.
FAQ
Are ajwain and saunf the same thing?
No. Ajwain is carom seed and saunf is fennel seed. They come from different plants and taste very different: ajwain is sharp and pungent, saunf is sweet and mild.
Which is stronger, ajwain or saunf?
Ajwain is much stronger. You usually need only a quarter of the quantity you would use for saunf, so always start with a small pinch.
Can I eat ajwain and saunf together after meals?
Yes, many Indian homes roast them together as a traditional mukhwas. Keep the ajwain portion small so the sweetness of saunf comes through.
If your pakoras and parathas are missing that familiar street-style aroma, try ODM Ajwain (Carom Seeds), clean whole seeds packed fresh for everyday cooking.