How can I make fine powder from leafy herbs?

I've been curious about how to make fine powder from leafy herbs for some time now (I don't mean merely flakes). We can have large amounts of tarragon, basil, etc. in the garden. It would be nice to be able to make a fine, powdered form. How can I do this?
I'm especially looking for alternatives besides coffee grinders, since I'd be uncomfortable with using that solution.
Best Answer
Mill them.
When you dry them very well ( so when you think they are dry put them in oven for 20 minutes at around 40 Celsius).
Then use mortar. This is it exact use in kitchen, to turn moist things into paste and dry things into powder.
If you don't have one use poor man hand mill.
Put leaf on large cutting board and then use smaller one on top. Move it in circular motion with little to no pressure.
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Quick Answer about "How can I make fine powder from leafy herbs?"
Food Dehydrators can be used to dry the herbs until they are ready to be ground into a fine powder. Then a mortar and pestle can be used for grinding.How do you make fine powder herbs?
PreparationHow do you make powder from plants?
Use a coffee grinder, which can double as an herb grinder, to shred up the rosemary and oregano. You can be as precise or mix it up like I did. I simply mixed the two herbs together. Only grind a few herbs as at a time since it will overwork the motor when too much is put inside at one time.What do you use to grind fresh herbs?
Take the herbs out of the bag, remove from the stem and crush them up. Save them in an airtight container or spice jar until use. For rosemary or other dense herbs use a coffee grinder or herb grinder them into a fine powder for use in rub. I keep a coffee grinder just for grinding herbs.HOW TO POWDER PLANTS and HERBS
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Answer 2
Modernist bartenders use cryo-muddling. This is a technique where herbs are added to a cocktail shaker, liquid nitrogen (LN) is added, then the herbs are muddled. This allows one to muddle the herbs into a powder. It further allows excellent flavor extraction, without browning or off-flavors. Of course, in this instance you do have to use it immediately to build a cocktail. I imagine you could use LN to pulverize, and then freeze the powder for use of fresh herbs later. This, of course, requires access and the know how to safely use LN.
Answer 3
Food Dehydrators can be used to dry the herbs until they are ready to be ground into a fine powder. Then a mortar and pestle can be used for grinding.
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