cook up

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

noun

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

Idioms and Phrases

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

Example Sentences

No matter how you dress them, whatever complicated motivations and methodologies you cook up, they’re all cut from the same pattern.

From Los Angeles Times

The four-week partnership, which was announced alongside the book’s release, allows fans to cook up several recipes, including Fried Chicken & Gravy, Sirloin Steak with Blue Cheese Butter, Country Fried Trout and more.

From Salon

Then, after the tour, the guests are able to cook up some of what they have found.

From Salon

So grab some sleeves of Saltines or crank up your skillet to cook up some grilled cheeses, because this soup is unmissable.

From Salon

For instance, Smith’s indictment cited Trump’s failed coercion of the Department of Justice to cook up some bogus investigation into alleged voter fraud.

From Slate