M&M’s are among the world’s most loved and iconic candies. The colourful hard-shell treats can be found everywhere from shopping malls to the White House – and even in space. Here are some tasty facts you might not know about the double Ms, including where the idea came from, why the characters had a makeover and how two workers fell into a vat of chocolate.

Click or scroll through our gallery to discover the tasty tale of how M&M’s came to dominate the world of candy – counting down to the most surprising fact of all.