Advertisement for 'Chicoree Williot' coffee substitute (colour litho)

produced during wartime when real coffee was in short supply; made by roasting the root of chicory plants; this drink made from chicory became very popular in France after the scarcity of coffee following a blockade of British shipping by Napoleon in 1806; the chicory plant, when roasted, produced a drink that resembled or could be added to coffee; still popular in France today as a drink on its own or as an additive to coffee or in cooking, it was grown and produced in large quantities in the 19th century in the North of France in the Pas-de-Calais region;