bread and butter

Pre-fame, reception work was her bread and butter – most memorably at a hair salon that provided a "first glimpse of what it's like to have a glam squad".

But keeping the Ibrox club in their box is the bread and butter.

Utter asininity is the bread and butter of “The Naked Gun,” and the movie milks cop idiocy for all its worth.

He will always have confidence in his physicality - it is his bread and butter.

“But their bread and butter business is receiving people to give secrets,” he continued, “and part of that is getting close to people in power.”