Garlic is a species in the onion genus, Allium. Its close relatives include the onion, shallot, leek, chive, and Chinese onion. Garlic Contains a Compound Called Allicin, Which Has Potent Medicinal Properties. Garlic is a plant in the Allium (onion) family. It is closely related to onions, shallots and leeks. It grows in many parts of the world and is a popular ingredient in cooking due to its strong smell and delicious taste.
