The term dates back to 1350–14004 from the past participle stem of Latin decoquere (meaning "to boil down"), from de ("from") + coquere ("to cook").5
In brewing, decoction mashing is the traditional method where a portion of the mash is removed to a separate vessel, boiled for a time and then returned to the main mash, raising the mash to the next temperature step.
In herbalism, decoctions are usually made to extract fluids from hard plant materials such as roots and bark.6 To achieve this, the plant material is usually boiled for 1–2 hours in 1-5 liters of water. It is then strained. Ayurveda also uses this method to create Kashayam-type herbal medicines.
For teas, decoction involves boiling the same amount of the herb and water that would be used for an infusion (one teaspoon per cup) for about five to ten minutes.
Biology-online.org http://www.biology-online.org/dictionary/Decoction ↩
"Annex 1: WHO guidelines on good herbal processing practices for herbal medicines". WHO Technical Report Series. Geneva, Switzerlandglish: World Health Organization. 2018. ISSN 0512-3054. Retrieved 24 April 2022. https://link.gale.com/apps/doc/A545291563/GPS?u=edirect_gvrl&sid=bookmark-GPS&xid=7f6bffc5 ↩
Courtine, Robert J.; et al., eds. (1988) [French edition published 1984]. Larousse Gastronomique (English ed.). p. 362. ISBN 0-600-32390-0. 0-600-32390-0 ↩
"Dictionary.reference.com". Dictionary.reference.com. Retrieved 2018-05-29. http://dictionary.reference.com/browse/decoctions ↩
Etymonline.com http://www.etymonline.com/index.php?term=decoction ↩