Yes, you can substitute dried coriander leaves for fresh ones, but use about one-third the amount of dried coriander as you would fresh, as the flavor is more concentrated.
Dried coriander, also known as cilantro, is essentially dehydrated fresh coriander. The drying process concentrates the flavor compounds, meaning you need less of the dried herb to achieve a similar taste. A general rule of thumb is to use a 1:3 ratio when substituting dried herbs for fresh. This means for every tablespoon of fresh coriander called for in a recipe, you would use one teaspoon of dried coriander. Keep in mind that the flavor profile will be slightly different; dried coriander tends to have a more earthy and less bright, citrusy flavor compared to fresh. Consider adding the dried coriander earlier in the cooking process to allow the flavors to fully develop.
To revive dried coriander and enhance its flavor, try rehydrating it slightly before adding it to your dish. Simply soak the dried coriander in a small amount of warm water for a few minutes. This will help release its aroma and improve its overall taste.