- make a concoction (of) by mixing

- devise or invent
"He thought up a plan to get rich quickly"
"no-one had ever thought of such a clever piece of software"

- of charges

- prepare or cook by mixing ingredients
"concoct a strange mixture"

1. To digest; to convert into nourishment by the organs of nutrition. [Obs.]

"Food is concocted, the heart beats, the blood circulates. Cheyne." --

2. To purify or refine chemically. [Obs.] Thomson.

3. To prepare from crude materials, as food; to invent or prepare by combining different ingredients; as, to concoct a new dish or beverage.

4. To digest in the mind; to devise; to make up; to contrive; to plan; to plot.

"He was a man of a feeble stomach, unable to concoct any great fortune. Hayward." --

5. To mature or perfect; to ripen. [Obs.] Bacon.