Coriander seed buyers usually ask the same question first: whole or split? Both come from the same plant — Coriandrum sativum — and carry the same warm, citrusy aroma. The difference comes down to how that aroma is released, and that changes which one is the right fit for your production line.
What's actually different?
Whole coriander seeds keep their round shell intact, which holds the essential oil inside and releases it slowly — through grinding, toasting or simmering. Splits are whole seeds mechanically halved, exposing the interior and roughly doubling the surface area in contact with air or solvent. That single change is what drives every practical difference between the two formats.
When to choose whole seeds
If your product needs the seed's aroma to build gradually — spice blends, pickling mixes, marinades, rubs, or whole seeds toasted and added to baked goods — whole is almost always the right call. The intact shell also means a longer shelf life in storage, since less of the volatile oil is exposed to air before it reaches the end customer.
When to choose splits
Splits earn their place wherever extraction speed and yield matter more than a slow aroma build — industrial spice processing, seasoning blends that need fast flavor release, and essential oil distillation in particular. Because more surface area is exposed, splits extract faster and more completely than whole seed in the same processing time, which is why distillers typically ask for splits specifically.
Specifications at a glance
Still not sure which to order?
If in doubt, tell us what you're making — a spice blend, a marinade, or an oil distillation run — and we'll recommend the right format and sieve size. Full technical specifications for both grades are available on our Coriander Seeds product page.