With a flavour profile akin to a combination of garlic and onion, three-cornered leeks offer a pungent and savoury punch to dishes. Originating from the Mediterranean region, they have gained popularity as a foraged ingredient in various cuisines worldwide. These herbaceous perennials feature distinct triangular-shaped stems and delicate white bell flowers, resembling miniature snowdrops.

The name "three-cornered leeks" originates from the triangular shape of their stems, which sets them apart from other members of the Allium genus. These edible plants are also referred to by other names such as three-cornered garlic, three-cornered leek, and triquetrous garlic. The Latin name Allium triquetrum combines the genus "Allium," which includes all onion and garlic species, with "triquetrum" indicating the plant's characteristic triangular stem shape.

Like other members of the Allium family, they contain sulfur compounds that contribute to their pungent taste and potential health benefits. These compounds are believed to possess antibacterial and antioxidant properties, making three-cornered leeks a potential addition to a healthy and varied diet.