concoct

To prepare something by mixing various ingredients, especially to prepare food for cooking.

to concoct a potion

to concoct a new dish

To contrive something using skill or ingenuity.

to concoct a cunning plan

On the other hand, the finest argument ever concocted, the concentrated wisdom drawn from men and books, will fail to charm, like the hilarity of a dance, or the splendour of a gala, the young, gay girl, whose spirits are exuberant, and whose heart is untouched by care, and who, a dozen years afterwards, would, in calm cheerfulness, listen lovingly, and examine carefully, the pleaded reasons offered to her judgment.

To digest.

For the parts of an Embryo are nourished and encreased before it hath a Stomach to concoct any thing, and yet in a perfect Fœtus none can deny that the Stomach does concoct […]

A concoction.

I don't suppose these creatures are the concoct of your mind?" La Tour said. "If they're real, then Nature there is warped, no doubt by oppressive dampness and heat."

Digested or affected by heat.