Why would boiling milk in an electric kettle break the kettle?

Boiling milk in an electric kettle can break it because milk is thicker than water, and that makes things harder for the kettle.

Imagine your kettle is like a little superhero who loves to boil water. It has a special power, it can heat up really fast! But when you put milk inside instead of water, it’s like asking the superhero to carry a heavy backpack full of bricks instead of just a light one. Milk is thicker and stickier, so it makes the kettle work much harder.

When milk boils, it can sometimes make little bubbles or even foam, like when you mix chocolate powder into hot water. These bubbles can pop inside the kettle and cause pressure to build up. It’s like if your superhero was also being chased by a group of squirrels while carrying that heavy backpack!

If this happens too much, especially with milk that has a lot of stuff in it (like chocolate or cereal), the kettle might get so tired that its parts can start to break, just like when you're really tired and you drop your ice cream cone!