It takes about 4 weeks. After harvesting rosemary stems, hang in a group of 8, and hang in a dry, dark place. Then store in a air tight jar.
One small sprig of rosemary converts to 1/2 a teaspoon of dried rosemary.
1 tablespoon fresh rosemary equals 1 teaspoon dried
To substitute fresh rosemary for dried in a recipe, use three times the amount of fresh rosemary as the recipe calls for dried. For example, if the recipe calls for 1 teaspoon of dried rosemary, use 3 teaspoons of fresh rosemary. Remember to finely chop the fresh rosemary before adding it to the recipe for best results.
For rosemary, the ratio is three to one, fresh chopped to dried. So if your recipe calls for 2 tsp. of dried rosemary and you would rather use fresh, you will need three times as much, or two tablespoons of fresh chopped rosemary leaves.
4 tsp of dried rosemary equals 1/4 cup fresh.
Approximately one teaspoon of dried rosemary equals one tablespoon of fresh. (Approx. 1 tsp dry = 1 Tbsp fresh)
Usually about three times as much, but if a recipe calls for fresh, do your best to use fresh. Dried rosemary is one of those herbs that does not do very well dried. Fresh vs dried makes a huge difference. Also, depending on the recipe, if you're using dried rosemary, don't leave it in the food. Let it sit to soak the flavor in and then strain/take it out.
Typically, 1 tablespoon of fresh rosemary leaves can be roughly equivalent to 1 teaspoon of dried rosemary.
For fresh rosemary substitute 1/4 tsp dried rosemary for each tsp fresh required Or equal amounts of oregano OR basil. For dried rosemary substitute: Dried savory, tarragon, or thyme.
Fresh or dried rosemary weigh differently. Use a reasonable amount and taste as you cook; you can always add more but it's hard to remove. I doubt anyone weighs herbs.
That is about 3 gm.
rosemary goes well with potatoes, but fresh would be better.