Do you know why Kinder Surprise toy cases are yellow? Lots of chocolate lovers don't!

There's few treats that delight a child as much as a Kinder Surprise egg - chocolate AND a toy! What could be better?

You may well even remember persuading your own parents to buy you one when out shopping.

Have you ever wondered why the little toy cases are yellow, though?

Well, in case you haven't realised, it's because they're meant to look like the yolk when you crack the egg open.

It seems that a lot of people are only just realising this, and they're sharing their disbelief on Twitter.

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Most people are marvelling about how many years they've spent on this earth never putting two and two together:

"How have I got 2 this age & not discovered the toy case inside kinder egg is yellow cus it's supposed to be yolk. I feel cheated." @GroOrganicUK

"Just learned the inside of the Kinder Egg is yellow cause its meant to be the yolk.... ah here, its fairly obvious now :O" @JamesKingRadio

If you're into egg-shaped chocolates, you might want to have a go at a Creme Egg-based recipe ahead of Easter.

Scotch Creme Eggs combine the Cadbury favourites with cake and even more chocolate to make a huge treat with a gooey centre.

The seriously naughty treat, posted to Omm-Nomm.com, is a Cadbury Creme Egg surrounded by chocolate cake and buttercream before being smothered in melted and grated chocolate.

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