A Wonderleaf question
Why does cheese stretch when it melts?
a real page from the book
Cheese stretches when heat loosens its protein network and melted fat lets those proteins slide. In mozzarella, the strands stay linked as you pull, so they lengthen instead of snapping right away. That is why a hot pizza slice can trail soft strings behind it.
The exact cheese matters. Mozzarella has proteins arranged in a way that can line up into long pulls, while cheddar usually melts into a thicker puddle. Your child's dinner is showing a tiny structure lesson, with milk fat acting like oil between flexible ropes.
Wonder words
- protein
- mozzarella
- casein
- calcium
Try it out
Warm a small piece of mozzarella on toast, pull it apart with forks, and compare it with a bit of cheddar.
Read the whole picture book
Watercolour scenes, straight answers, about three minutes cover to cover.
Open the picture bookKeep wondering
- Who invented pizza?
- How is chocolate made?
- How did people keep food fresh before refrigerators?
- Why do fruits taste sweeter when they are ripe?
- Why do we cook food?
- How does food turn into energy?
And the next question?
Ask anything — Wonderleaf writes and illustrates a picture book for it. That's the whole idea.
Ask your own question