“To make a nettle infusion: Measure out one ounce of the dried herb. Boil a quart of water. Put the dried herb into a quart jar and fill to the top with the boiling water. Stir with a wooden spoon and add water until the jar is full to the top. Lid tightly and set aside to brew for at least four hours, or overnight, whichever is easier for you.
To use: Strain and squeeze the liquid out of the herb. Be sure to refrigerate your infusion, as it will go bad at room temperature once it is done brewing. (If that happens, I use it as plant food. And you should see how my roses adore it!)”
Here’s a link to Susun Weed’s page for more nettle information: http://www.herbshealing.com/herbal_ezine/October08/healingwise.htm