Definition of "concoction"

Salt is a very favoured ingredient of spell-binding concoctions.

1936, Rollo Ahmed, The Black Art, London: Long, page 178

[Sorrow] hinders concoction, refrigerates the heart, takes away stomach, colour, and sleep; thickens the blood […]

1624, Democritus Junior [pseudonym; Robert Burton], “New York Review of Books”, in The Anatomy of Melancholy: […], 2nd edition, Oxford, Oxfordshire: Printed by John Lichfield and James Short, for Henry Cripps, page 260

At last , the physicians after a long and stormy voyage , see land ; they have so good signs of the concoction of the disease , as that they may safely proceed to purge .

1624, John Donne, Deuotions upon Emergent Occasions, and Seuerall Steps in My Sicknes: […], London: Printed by A[ugustine] M[atthews] for Thomas Iones; republished as Geoffrey Keynes, edited by John Sparrow, Devotions upon Emergent Occasions: […], Cambridge: At the University Press, 1923,

There are also divers other great alterations of matter and bodies , besides those that tend to concoction and maturation

1631, Francis [Bacon], “IX. Century.”, in Sylua Syluarum: Or A Naturall Historie. In Ten Centuries. […], 3rd edition, London: […] William Rawley; [p]rinted by J[ohn] H[aviland] for William Lee […]