Identify whether your recipe uses coriander seed for flavor in a sauce/spice rub, or for a dry baking profile; this changes how long you should toast or cook the substitute.
Start with the swap ratio from the list, then toast seeds briefly (30–60 seconds) if your recipe allows it to deepen aroma.
Add the substitute, mix thoroughly, and simmer or bake according to your recipe; avoid long high-heat time if you’re using ground coriander.
Taste at the halfway point (or before baking finishes) and adjust: add a small pinch more for warmth, or balance with acid (lemon/vinegar) if it tastes flat.
For baking, grind any whole-seed substitute finely so it doesn’t create gritty pockets.