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As eggs age, air builds up inside the shell, making them buoyant.
2. Shake Test
What to do:
Hold the egg near your ear and shake it gently.
Fresh eggs make no sound.
Old eggs slosh — you’ll hear the yolk moving.
Why it works:
In older eggs, the egg white becomes thinner and allows the yolk to move more freely.
3. Crack and Smell Test
What to do:
Crack the egg into a small bowl.
Fresh eggs have a mild or no smell.
Bad eggs have a strong sulfur or rotten odor.
Why it works:
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