Red onions are perfect for topping a wide range of dishes, but there are a few keys you need to know when preparing them to get the best flavor.

J. Kenji López-Alt Cutting an onion up and down yields wonderfully even squares in the middle, but as you get toward the edges, the shapes come out increasingly stretched and elongated.

Sulphurous, volatile substances are produced when we cut onions ... which then produce tears to flush it out. It is possible to genetically modify onions so that they do not contain these substances.

A diet high in garlic, onions and leeks can halve the risk of prostate cancer, research suggests. The vegetables are rich in compounds called alliums, which are active against substances produced ...

Then cut each onion into quarters ... Sprinkle the bouillon, thyme, salt and pepper into the hollowed-out centers, then top that with butter. If desired, drizzle the wine or beef broth over ...