It is a blend of 85% Bordeaux region wines (Semillon for the Blanc and for the Rosé, Merlot for the Rouge) and 15% macerated liqueurs handcrafted on site, mostly citrus liqueurs (peels of sweet oranges from Spain and Morocco and peels of bitter green oranges from Haiti) and Quinine liqueur made of Cinchona bark from Peru. The mix is then stirred in oak vats until perfectly blended. During the ageing process, Lillet is handled as attentively as any great Bordeaux wine (undergoing fining, racking, filtering etc.). Lillet belongs to a family of aperitifs known as tonic wines because of the addition of Quinine liqueur.