cook up🔊

To prepare (food or chemical substances) by cooking or heating.

(figuratively) To manufacture; to invent (something, often a deceit or falsehood); to counterfeit (something).

(slang) To prepare (heroin, opium, crack, or meth) by heating or otherwise manufacturing.

(slang) To manufacture a significant amount of illegal drugs (LSD, methamphetamine, etc.).

(up)