An infusion of medicinal properties from roots or bark into a liquid. It takes more time to pull nutrients out of roots and bark than it does leaves. A weak decoction can be made by simmering the herb root for 15-45 minutes in water. A much more effective decoction requires a three-step process:
1) Simmer roots or bark for 15-45 minutes in water (distilled water is preferred).
2) Allow infusion to sit covered, for at least eight hours, or overnight.
3) Simmer again to concentrate nutrients. Discard solids and store decoction in refrigerator.