They’re different spices with distinct flavors and uses.

• Carom (ajwain): Pungent and slightly bitter with a thyme-like aroma. It’s typically used in small amounts to add a bold, savory note.
• Cumin: Warm, earthy, and nutty. It’s often used more generously for depth and smokiness.

They don’t taste the same, so swapping one for the other can change a dish’s character. If you’re aiming for carom’s sharp, herbaceous lift, cumin won’t deliver the same effect. Consider the recipe’s flavor profile and start with a small adjustment if you need to substitute, as results can vary with personal taste and preparation.

Carom (ajwain) shines in savory dishes when you want a bold, herbaceous kick.

• Breads and doughs: Knead a pinch into flatbreads, crackers, or savory pastries for an aromatic lift.
• Batters and fritters: Add to pakora-style batters or vegetable fritters for extra punch.
• Legumes and soups: Sprinkle into lentils, beans, and hearty soups to cut through richness.
• Pickles and snacks: Use in spice mixes for snack mixes, roasted nuts, or quick pickles.

The flavor is concentrated, so a little goes a long way. Start with a small pinch, taste, and adjust. Incorporating it at the right stage can help balance bitterness and bring out its aroma.

The most common English name for ajwain is carom seed.

• It’s also sometimes labeled as bishop’s weed or ajowan seed on spice packaging.
• Product listings may use “ajwain,” “carom,” or both, so it helps to search by either term.

While names can vary by brand and region, “carom seed” and “ajwain seed” generally refer to the same spice. If you’re browsing online, look for whole seeds or ground ajwain depending on how you plan to cook with it. Checking the product description and ingredient list can help confirm you’re choosing the spice you want.

There’s no perfect one-to-one substitute, but a few options can offer a similar vibe.

• Dried thyme: Often the closest in aroma. Start with a smaller amount and adjust to taste.
• Oregano (pinch): Adds herbaceous notes; use sparingly to avoid overpowering the dish.
• Caraway seed: Works better in breads and pickles. It’s sweeter and more anise-like.

If a recipe relies on carom’s punch, combining a little thyme with a small pinch of cumin or caraway can approximate the effect. Add gradually and taste as you go, since substitutions can shift the flavor balance depending on the dish and cooking method.

Both forms can work—choose based on texture and how you’re cooking.

• Whole seeds: Great for doughs, breads, and snack mixes when you want pops of aroma. Lightly warming them in oil or ghee can mellow bitterness and release flavor.
• Ground ajwain: Blends evenly into batters, spice rubs, and marinades. It’s potent, so start with a small pinch and build up.

If you only have whole seeds, you can crush them lightly with a mortar and pestle for a fresher, coarse texture. Whichever you choose, add gradually and taste; the spice is assertive, and small changes can noticeably shift the final flavor.