cook up

British  

verb

1. informal to concoct or invent (a story, alibi, etc)

2. to prepare (a meal), esp quickly

3. slang to prepare (a drug) for use by heating, as by dissolving heroin in a spoon

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noun

1. (in the Caribbean) a dish consisting of mixed meats, rice, shrimps, and sometimes vegetables

cook up Idioms  

1. Fabricate, concoct, as in She's always cooking up some excuse. [Colloquial; mid-1700s]

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Example Sentences

Mama was always cooking up nourishing broths and porridges for forgotten old men and pale young mothers—on days, that is, when she herself was strong enough to stand at the stove.

From Literature

Since then, Pivot Bio has been cooking up more efficient microbes and building a distribution network better equipped to advise farmers.

From The Wall Street Journal

To do so, I stay away from bistros in fancy neighborhoods, which charge too much and often cook up mediocre food.

From Barron's

Burger King’s social-media managers had spent months cooking up stunts to make their president an online sensation.

From The Wall Street Journal

So it wasn't long before he found himself back in the kitchen, cooking up a storm across London with his sold-out supper clubs, bustling pop-up cafes, and crowded lunchtime falafel bars.

From Barron's