Garlic is a species in the onion genus, Allium. It is closely related to onions, shallots, and leeks. Garlic is widely used for its pungent flavor and aroma in cooking, as well as for its medicinal properties. It is rich in vitamins and minerals, including vitamin C, vitamin B6, and manganese. Garlic is believed to have various health benefits, such as boosting the immune system, reducing blood pressure, and improving cholesterol levels. It can be used fresh or dried, and is used in a variety of dishes around the world.