<h2 class="wp-block-heading eplus-wrapper">What's happening? </h2>

"Would you like a piece of chocolate?" Millie looks up at her grandmother. "Yes, please!" she says happily.

But when she pops it in her mouth - "Ugh!" It is the most disgusting thing she has ever tasted: not the milk chocolate she was expecting, but dark chocolate. How horrible!

People around the world disagree on lots of different things. But one of the most common arguments is about chocolate. Some people like dark, some like milk - but hardly anyone likes both.

Chocolate is made from the seeds of the cacao tree. These are also known as cocoa beans.

<h2 class="wp-block-heading eplus-wrapper">Find out more </h2>

It was originally drunk rather than eaten.

Chocolate was not eaten in Europe until the 16th Century. It slowly became fashionable, and people began buying it in a solid form.

In the 1850s, a Swiss businessman called Daniel Peter invented milk chocolate by adding milk powder. This changed everything - because cocoa beans in their natural state are extremely bitter.

Scientists say that dark chocolate can be good for you, because it contains flavanols, which help reduce blood pressureThe beating of our hearts keeps our blood at a certain pressure. This pressure can rise when we are stressed, as the heart beats faster..

Yes! It tastes much sweeter than dark chocolate - so it is a much better sweet treat. Dark chocolate is far too bitter.

No! Scientists think dark chocolate could be good for you in some ways - but it only applies to dark chocolate, not milk.

Blood pressure - The beating of our hearts keeps our blood at a certain pressure. This pressure can rise when we are stressed, as the heart beats faster.