What Causes the ‘Sizzle’ of Frying Eggs?

When you put an egg in a hot pan, the liquid inside starts to heat up quickly. This makes tiny bubbles of vapor pop, and poof! You hear a sizzling sound. It’s like when water boils and makes noise in your kettle, but even faster.

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Examples

A fried egg in a hot pan makes a sizzling sound because the inside is bubbling up.
Adding water to a pan before putting in an egg makes it sizzle more loudly.
Eggs crack while frying and make extra sizzles because of the sudden release of steam.

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Categories: Science · food science,cooking,physics of cooking