Galium odoratum / Asperula odorata, is a flowering perennial plant in the family Rubiaceae, native to Europe, North Africa and Western Asia.

It is a herbaceous plant which grows to 30–50 cm in height – often lying flat on the ground or being supported by other plants. Its other names include woodruff, sweet woodruff, and wild baby’s breath.

It owes its sweet smell to coumarin, an odoriferous agent and is sometimes used as a flavoring agent. As the epithet odoratum suggests, the plant is strongly scented, the sweet scent being derived from coumarin. This scent increases on wilting and then persists on drying. The dried plant is used in pot-pourri and as a moth repellent.

In Germany, it is used to flavor May Wine. Beer, brandy, jelly, jam, sausages, ice creams, soft drinks, herbal tea, and sherbet are all flavored using woodruff. Mixed with vodka it becomes a popular drink among the young people.

High doses can cause headaches, since coumarin is toxic. Very high doses can cause serious problems like vertigo and somnolence.