Syringa vulgaris 'Madame Lemoine'.
In her marvellous book Scent Magic, Isabel Bannerman says this variety smells of Ambrosia Creamed Rice! She tells us, "In the nineteenth and early twentieth centuries the family Lemoine of Nancy, France, was gripped in a fever of breeding, creating, from the humble but delicious common lilac and its cousins, plants with shocking plumes of immense weight loaded with scent, the names redolent of a lost world: Necker, Lamartine, Vauban. They also extended the range of hue to depths of rich crushed mulberry and heights of iridescent stormy slatey-violet blues. Nineteenth century Europe's drawing rooms were entranced by the shrubs and, as Proust put it, the 'starry locks that crowned their fragrant heads'."
