Definition

Slang meaning performing well, developing momentum, or executing effectively on a task or project. Can also mean something is in progress or being prepared secretly.

Example Usage

The marketing team is cooking up a major campaign for next quarter.

Origin

From the culinary metaphor of recipes developing flavor through cooking; implies progress and active work.

Fun Fact

Popular in sports commentary ('he's cooking tonight') and hip-hop slang since the 1980s.

Source: Definition backfill (hailey)