Black-and-white milkshakes, by default, incorporate vanilla into the shake’s overall flavor. You also have more control over how much or how little chocolate syrup you’d like to add to the shake.

What black and white smoke means After the cardinals' votes are counted, the paper ballots are burned in a stove in the Sistine Chapel. Black smoke emerging from the chimney means the world's 1.4 ...

It wasn't clear whether grey smoke was closer to black or white, for example. By the 1970s, the straw method had been abandoned in favor of more controllable chemical mixtures.