This method of extracting the properties is like brewing tea. It's best for flowers, leaves and stems. Boil the water first. Turn off the heat. Add your herb, cover with the lid. Let it steep for about 10 minutes. Never use metal, use a glass or enamel pan with a tight-fitting lid. Use about a pint of water to every ounce of herb. Strain, use liquid.
If you have a juicer, you already know how to do this method. By pressing the plant parts with either a manual or electric juicer, adding a small amount of water and then pressing again, you will be using 100% of the plant parts, and keeping the full activity of the ingredients. You must use the juice immediately after juicing for the healthiest results.
Using a mortar and pestle, grind dried plant parts into a powder which can be mixed into a liquid base or poured into capsules for ingesting.
(This information was gathered here. The author is Sharon Hougton)