What if you stopped throwing away your egg shells? What many consider to be ordinary cooking waste can actually be a valuable resource, both environmentally and economically. Cooking egg shells in a frying pan can not only save you money, but also improve your daily life, whether for garden, cleaning or even health.
Do you want to know how? Discover the many benefits of this simple and effective tip.
Why boil egg shells?
Egg shells are generally calcium (about 90%) and contain other beneficial minerals such as magnesium and potassium. By cooking them:
- Free these minerals in the water, creating a natural fertilizer.
- Dispose of bacteria (such as salmonella), making them safer to use.
- Facilitate their conversion to powder or liquid for different applications.
How to make hard-boiled egg shells?

Follow these simple steps to reap all the benefits:
- Pave your shells after use and rinse them thoroughly to remove any egg residue.
- Boil them for 10 minutes in a saucepan filled with water.
- Filter the water and collect the shellfish. You can now use calcium-enriched water and grind the shells for other uses.
Tip: Keep your shells in a refrigerator in a sealed container until you have enough to cook them.
The Surprising Uses of Hard Eggshells
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Fertilize plants with mineral-rich water

The water obtained after boiling is an ideal natural fertilizer for plants that need calcium, such as tomatoes, peppers or roses.
How do you do that?
Let the water cool and use it to water your plants once a week.
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Even more efficient compost

Crushed egg shells add calcium to compost, which promotes better decomposition of organic waste.
Tip: By grinding the shells after cooking, they will decompose more quickly in the compost.
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