Add the stinging nettle to the bottom of a heat-proof wide mouth quart canning jar, or other heatproof container with a lid.
Pour in boiling water, covering the herb, and filling the jar up to the rim (approximately 3 ½ cups of water).
Swirl the water gently to make sure all of the dried herb is moistened, then place a lid on the jar.
Allow the water to infuse with the dried herb for 30-40 minutes.
Set a small mesh strainer over a clean jar, and line it with cheesecloth (if desired).
Pour the infusion through the strainer, collecting the liquid in the jar below. Compost the herb solids.
Drink the nettle infusion warm as a tea, or chilled as an iced tea. Keeps well in the fridge for 1-2 days.