Step-by-Step Guide to Nana’s Egg Freshness Test
1. Fill a bowl with water
Use a bowl or glass filled with cold water, deep enough to fully submerge the egg.
2. Gently place the egg in the water
Carefully drop the egg in and watch how it behaves.
3. Interpret the result:
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Sinks and lies flat: The egg is very fresh.
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Sinks but stands upright: Still safe to eat, but not as fresh. Use it soon.
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Floats to the surface: The egg is old—discard it.
This quick and simple test gives you a reliable freshness check in seconds.
Why Nana’s Method Works
The method works due to changes in the egg’s air cell over time. As moisture evaporates through the porous shell, the air pocket grows. This larger pocket increases buoyancy, causing older eggs to float. Fresh eggs, with smaller air pockets, are denser and remain at the bottom. This principle of buoyancy is the science behind Nana’s simple trick.
Other Ways to Test Egg Freshness
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