1
Roast your coriander seeds in a medium pan on low heat. Stay close to the pan for monitoring purposes. The seeds will turn to a rich brown. Do not overheat or overcook the seeds, as they will burn and have an unpleasant taste.
2
Finely crush the roasted coriander seeds. This can be done in a variety of ways, including:
Placing the seeds in a ziplock bag and using a meat tenderizer or rolling pin to crush them.
Using a traditional blender.
Using a pestle and mortar.
You will want to crush the coriander as fine as you can, but a few larger kernels is not an issue.
3
Add the coriander seeds to the salt and the pepper. Shake to mix.