Why My Grandmother Always Puts a Nail in the Onion – A Surprising Old Trick! – Page 2

Onions absorb iron from the rusty nail, making them more nutrient-rich
If you plant the onion, the iron in the soil helps strengthen plants & deter pests
Helps prevent yellowing leaves caused by iron deficiency in soil

Gardeners sometimes bury an iron nail near plants to naturally fertilize the soil!

3. Enhances Onion’s Antibacterial Properties
Onions are natural disinfectants, and iron may enhance their antimicrobial effects
Used in some folk remedies to treat infections & purify water
A common trick in natural medicine practices
Some believe that placing an iron nail in an onion overnight increases its medicinal benefits!
4. A Traditional Cooking & Pickling Trick