builder's brew 

A strong black tea with milk, usually with two sugars and served in a mug (as opposed to a teapot). Usually achieved with using strong quality tea brands, such as PG Tips or Yorkshire Gold. Term is also known as "builder's tea" and mostly used the commonwealth and ex-commonwealth (UK and Ireland especially). "Brew" is more colloquialism than "tea" and is more appropriate at informal environment, for example with your buddies.

#1. Office space.
James: All right mate?
Mike: Yeah, yourself?
James: Yeah, I'm well, thank you. You're up for builder's brew?
{then goes to make tea for everybody}

#2. "Make Mine a Builders" - a slogan and a name of the real but less-popular tea brand

builder's brew by R0yston October 17, 2014