If a recipe calls for 1 teaspoon dried coriander leaves and you only have coriander powder how much would you use in place of dried?

If a recipe calls for 1 teaspoon of dried coriander leaves, you can use about 1/3 to 1/2 teaspoon of coriander powder as a substitute. This is because ground spices are more concentrated than their dried leaf counterparts. Adjust to taste, as the flavor may vary slightly between the two forms.