Latin decoquere, de plus coquere, to cook down, produced decoctio, the boiling down, and English decoction by the 14th century: the standard extraction for hard plant materials, roots, bark, seeds, simmered one to two hours where delicate leaves get a mere infusion. The coquere family is the archive's favorite proof that medicine and cuisine were one room: kitchen, cook, biscuit, twice-cooked, concoction, boiled together, and precocious, cooked early, all descend from the same verb. The brewers kept the term too, decoction mashing, and Ayurveda's kashayam runs the identical process under an older name.
The household medical tradition ran on the decoction's economics: the physic garden outside, the still-room inside, the lady of the house or the monastery's infirmarer converting the garden into the year's medicine by boiling, the recipe books, receipt books, doubling as cookbooks because the categories had not yet split. The Scots apothecary invoices in this archive's Tincture file show the same kitchen-logic at estate scale, cinnamon water beside the laudanum. The split came with industrial pharmacy: the boiling moved to the factory, the word stayed in the herbalists' kitchen, and decoction now marks the border between the folk stove and the industrial vat.
The claim: decoction is the archive's method in a word, take the whole tangled material, apply heat and time, keep what dissolves, discard the marc, every entry in this collection a decoction of the record, and the same root's darker child, concoction, now means fabrication, the two words splitting exactly at the honesty of the process. Verdict: the coquere split is documented and the archive adopts it as quality control: a decoction tells you its ingredients and its boil time, a concoction just arrives. The ancients cooked their medicine in the open kitchen. The modern vats are closed. The word that kept the stove is the word that kept the trust, and it is not the one on the television.
If the medicine is a boiled-down dinner, what separates the recipe from the prescription, and who tasted the difference?