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No you can't. Fresh coriander is when you use the leaves and ground coriander uses the seed of the plant. Their flavour is quite different from each other.
They are not equivalent. Ground coriander is the seed whereas fresh coriander is the leaf of the plant. They are different flavors and cannot be substituted.
1 tablespoon fresh rosemary equals 1 teaspoon dried
One tbsp of fresh coriander would be one teaspoon of dried and vice-versa. That is a three to one ratio. This formula works for all herbs. Just remember 1tbsp fresh = 1 tsp. dried. Packaged dried herbs are stronger than fresh herbs, but lose their potency as they age. If the container is new then use a bit more sparingly. Fresh herbs are the way to go to get the best results.
A one inch piece of fresh, grated ginger (generally yielding 1 tablespoon) equals approximately 1/8 teaspoon ground (dried) ginger. Source: http://www.evitamins.com/healthnotes.asp?ContentID=3602003
1 tablespoon dried minced onion = 3 tablespoon fresh minced onion
The rule of thumb here is that one teaspoon of dried herb equals one tablespoon of fresh.
Use 1/3 or 1/2 of the fresh amount. So, if the recipe calls for 1 teaspoon fresh cilantro, you use 1/3 or 1/2 teaspoon of dried.
You can replace coriander with cilantro, which is the leafy form of the seed, coriander. This is not an exact match, and the flavor/scent of cilantro is stronger than coriander, so be very careful. I'd replace 1tsp of dried coriander with 1/2tsp of dried cilantro or 1Tbsp of fresh, minced cilantro.Cumin might make a reasonable replacement. Depends whether you need ground or fresh.
Not if you want it to taste the same! The leaf of the same plant is cilantro.
If the recipe calls for coriander seeds, cumin and caraway seeds are good substitutes. If the leaves of coriander is what is required for the recipe, this is also known as cilantro. In this case, fresh parsley can be used as a substitute.
Approximately one teaspoon of dried rosemary equals one tablespoon of fresh. (Approx. 1 tsp dry = 1 Tbsp fresh)