Why My Grandmother Always Put a Nail in the Onion

And she was right.

This simple, old-fashioned hack has practical, culinary, and even gardening benefits that most people have never heard of. Whether you love making soups, enjoy kitchen shortcuts, or appreciate traditional wisdom, this little trick might surprise you too.

Let’s dive into why slipping a nail into an onion has stood the test of time — and why you may want to try it yourself!