Leek is a vegetable of the onion family (Amaryllidaceae) of the species Allium ampeloprasum. Leek, which originates from the Mediterranean region, has a long and cylindrical structure. It has white parts and green leaves. The white part of the leek is usually soft and sweet, while the green leaves are harder and usually used in cooking.

In terms of nutritional value, leeks are a low-calorie vegetable and contain important nutrients such as vitamin C, vitamin K, folate, iron, potassium and fiber. The fiber content supports digestive health, while vitamin C and other vitamins are beneficial for overall health.